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Class 10 Compulsory Mathematicsकक्षा १० अनिवार्य गणित — SEE notes & solutions

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Class 10 Compulsory Mathematics Chapter Wise Questions

Past SEE exam questions for Compulsory Mathematics, organised chapter by chapter with solutions.

Asked on 2082 Exam
1.

एउटा विद्यालयको 120 जना विद्यार्थीहरूमा गरिएको सर्वेक्षणमा फुटबल मात्र र भलिबल मात्र खेल्न मन पराउने विद्यार्थीहरूको अनुपात 2:1 पाइयो । साथै 20 जना विद्यार्थीहरू फुटबल र भलिबल दुवै खेल खेल्न मन पराउने र 10 जना यी दुवैमध्ये कुनै पनि खेल खेल्न मन नपराउने पाइयो ।

In a survey conducted among 120 students of a school, the ratio of the students who liked to play football only and volleyball only was found to be 2:1. Also there were 20 students who liked to play both football and volleyball and 10 students who did not like any of these two games.

(a) यदि फुटबल र भलिबल खेल्न मन पराउने विद्यार्थीहरूको समूह क्रमशः F र V छन् भने दुवै खेल खेल्न मन पराउने विद्यार्थीहरूको समूहलाई गणनात्मकता सङ्केतमा लेख्नुहोस् ।

If F and V are the sets of students who like to play football and volleyball respectively, write the set of students who like to play both games in cardinality natation.

(b) दिइएको जानकारीलाई भेनचित्रमा प्रस्तुत गर्नुहोस् ।

Present the given information in a Venn-diagram.

(c) फुटबल खेल्न मन पराउने विद्यार्थीहरूको सङ्ख्या पत्ता लगाउनुहोस् ।

Find the number of students who like to play football.

(d) भलिबल खेल्न मन पराउने विद्यार्थी सङ्ख्या फुटबल खेल्न मन पराउने विद्यार्थी सङ्ख्याभन्दा कति प्रतिशतले बढी वा कम छ ? तुलना गर्नुहोस् ।

By what percentage the number of students who like to play volleyball is more or less than the number of students who like to play football? Compare it.

[1 + 1 + 3 + 1]
Asked on 2082 Exam
2.

कक्षा दशमा अध्ययनरत 200 जना विद्यार्थीहरूलाई गणित र अङ्ग्रेजीमध्ये कुन विषय मनपर्छ भनी सोधिएको सर्वेक्षणबाट प्राप्त विवरण तल उल्लेख गरिएको छ ।
Below is a survey of 200 students studying in class ten asking which subject do you prefer between Mathematics and English.

• 120 जना विद्यार्थीले गणित मन पराउँछन् ।
120 students like Mathematics.

• 110 जना विद्यार्थीले अङ्ग्रेजी मन पराउँछन् ।
110 students like English.

• 30 जना विद्यार्थीले यी दुई विषयहरूमध्ये कुनै पनि मन पराउँदैनन् ।
30 students like none of these two subjects.

(a) गणित मन पराउने विद्यार्थीको समूहलाई M र अङ्ग्रेजी मन पराउने विद्यार्थीको समूहलाई E मानी कुनै पनि विषय मन नपराउने विद्यार्थीको समूहलाई गणनात्मकता सङ्केतमा लेख्नुहोस् ।
Write the set of students who like none of these two subjects in cardinal notation by supposing the set of students, who like mathematics by 'M' and English by 'E'.

(b) माथिको तथ्यलाई भेनचित्रमा प्रस्तुत गर्नुहोस् ।
Present the above information in a Venn-diagram.

(c) एउटा मात्र विषय मन पराउने विद्यार्थीहरूको सङ्ख्या पत्ता लगाउनुहोस् ।
Find the number of students, who like exactly one subjects.

(d) रामले भने - "दुवै विषय मन पराउने विद्यार्थी सङ्ख्या, कुनै पनि विषय मन नपराउने विद्यार्थी सङ्ख्याको दोब्बर छ ।" तपाईं रामको भनाइसँग सहमत हुनुहुन्छ ? पुष्टि गर्नुहोस् ।
Ram said, "The number of students who like both the subjects is double of the number of students who like none of these subjects." Do you agree with Ram's statement? Justify it.

[1 + 1 + 3 + 1]
Asked on 2082 Exam
3.

एउटा विद्यालयको कक्षा दशमा अध्ययनरत 205 जना विद्यार्थीहरूको समूहमा गरिएको सर्वेक्षणअनुसार नेपाली भाषा हस्तलेखन प्रतियोगितामा सहभागी विद्यार्थीको सङ्ख्या 140 र अङ्ग्रेजी भाषा हस्तलेखन प्रतियोगितामा सहभागी विद्यार्थीको सङ्ख्या 100 छन् । यी दुवै भाषाको हस्तलेखनबाहेक अन्य भाषामा सहभागी विद्यार्थीको सङ्ख्या 15 छ ।

According to a survey of 205 students who are studying in class ten of a school, the number of participated students in Nepali language handwriting competition is 140 and the number of participated students in English language handwriting competition is 100. The number of students who participated in other language except these two language handwriting is 15.

(a) माथिको सन्दर्भमा 'N' र 'E' ले क्रमशः नेपाली भाषा र अङ्ग्रेजी भाषा हस्तलेखन प्रतियोगितामा सहभागी विद्यार्थीहरूको समूहलाई जनाउँछ भने दुवै भाषाबाहेक अन्य भाषामा सहभागी विद्यार्थीको समूहलाई गणनात्मकता सङ्केतमा लेख्नुहोस् ।

In the above context, 'N' and 'E' denote the sets of students participated in Nepali language and English language handwriting competition respectively. Write the cardinality notation of the set of students who participated in other language except these two languages.

(b) माथि दिइएको तथ्यलाई भेनचित्रमा प्रस्तुत गर्नुहोस् ।

Present the given information in a Venn-diagram.

(c) एउटा मात्र भाषाको हस्तलेखन प्रतियोगितामा सहभागी हुने विद्यार्थीको सङ्ख्या पत्ता लगाउनुहोस् ।

Find the number of students participating in exactly one language handwriting competition.

(d) कम्तीमा एउटा र बढीमा एउटा भाषाको हस्तलेखनमा सहभागी सङ्ख्याविच तुलना गर्नुहोस् ।

Compare between the number of students participated in at least one and at most one language handwriting.

[1 + 1 + 3 + 1]
Asked on 2082 Exam
4.

एउटा कार्यक्रममा उपस्थित 450 जना विद्यार्थीहरूमध्ये 144 जना विद्यार्थीहरूले गणित विषय मात्र, 216 जना विद्यार्थीहरूले विज्ञान विषय मात्र मन पराउने पाइयो तर 63 जना विद्यार्थीहरूले कुनै पनि विषय मन नपराउने पाइयो ।

Among the 450 students present at the program, 144 students were found to like mathematics subject only, 216 students were found to like science subject only but 63 students were found who did not like any of these two subjects.

(a) यदि जम्मा उपस्थित सङ्ख्यालाई 'U' ले जनाइन्छ भने U को गणनात्मकता सङ्ख्या लेख्नुहोस् ।

If the total number of present is represented by 'U' then write cardinality of 'U'.

(b) दिइएको जानकारीलाई भेन चित्रमा प्रस्तुत गर्नुहोस् ।

Show the given information in a Venn-diagram.

(c) गणित विषय मन पराउने विद्यार्थीहरूको सङ्ख्या पत्ता लगाउनुहोस् ।

Find the number of students who liked mathematics subject.

(d) दुवै विषय मन पराउने विद्यार्थी सङ्ख्या कुनै पनि विषय मन नपराउने विद्यार्थी सङ्ख्याभन्दा कति प्रतिशतले कम छन् ?

How much percent the number of student who liked both subjects is less than the number of students who did not like any of two subjects?

[1 + 1 + 3 + 1]
Asked on 2082 Exam
5.

कक्षा दशका 80 जना विद्यार्थीहरूमा गरिएको सर्वेक्षणबाट निम्न जानकारी प्राप्त भयो :

In a survey of 80 students of class ten, the following information was found.

● गणित विषय मात्र र विज्ञान विषय मात्रको अतिरिक्त कक्षा लिने विद्यार्थीको अनुपात 4:3 छ ।

The ratio of students who take extra class of only Maths subject and only Science subject is 4:3.

● दुबै विषयको अतिरिक्त कक्षा लिने 5 जना विद्यार्थीहरू छन् ।

5 students take extra class of both subjects.

● कुनै पनि विषयको अतिरिक्त कक्षा नलिने 12 जना विद्यार्थीहरू छन् ।

12 students don't take extra class of any subject.

(a) यदि M र S ले गणित र विज्ञान विषयको अतिरिक्त कक्षा लिने विद्यार्थीहरूको समूहलाई जनाउँछ भने यी दुबै विषयमध्ये कुनै पनि विषयमा अतिरिक्त कक्षा नलिने विद्यार्थीको समूहलाई गणनात्मकता सङ्केतमा लेख्नुहोस् ।

If M and S denote the set of students who take extra class of Maths and Science respectively, write the set of students who did not take extra class in any of these two subjects in cardinality notation.

(b) माथि दिइएको तथ्यलाई भेन चित्रमा प्रस्तुत गर्नुहोस् ।

Illustrate the above given information in a Venn-diagram.

(c) गणित विषयको अतिरिक्त कक्षा लिने विद्यार्थीहरूको सङ्ख्या पत्ता लगाउनुहोस् ।

Find the number of students who take extra class of Maths subject.

(d) कम्तिमा एउटा मात्र विषयको अतिरिक्त कक्षा लिने र बढीमा एउटा मात्र विषयको कक्षा लिने विद्यार्थीहरूबिच अनुपातमा तुलना गर्नुहोस् ।

Compare the number of students who take extra class of at least one subject and who take extra class of at most one subject in ratio.

[1 + 1 + 3 + 1]
Asked on 2082 Exam
6.

एउटा सर्वेक्षणमा सहभागी 500 जना युवाहरूमध्ये 320 जनाले आइफोन मन पराउँछन् र 225 जनाले एन्ड्रोइड फोन मन पराउँछन् । सबै युवाले कम्तीमा एउटा फोन मन पराउँछन् ।

Among 500 youths participated in a survey, 320 liked iPhone and 225 liked android phone. Every youth liked at least one phone.

(a) यदि 'I' र 'A' ले क्रमशः आइफोन र एन्ड्रोइड फोन मन पराउने युवाहरूको समूहलाई जनाउँछ भने दिइएको कथनबाट आइफोन मन पराउने युवाको समूहलाई गणनात्मकता सङ्केतमा लेख्नुहोस् ।

If 'I' and 'A' denote the sets of youth who like iPhone and android phone respectively, write the cardinality notation of the set of youth who liked iPhone.

(b) दुवै खाले फोन मन पराउने युवाहरूको सङ्ख्यालाई \(x\) मानी दिइएको जानकारीलाई भेनचित्रमा प्रस्तुत गर्नुहोस् ।

Present the given information in a Venn-diagram by supposing \(x\) as the number of youth who like both type of phone.

(c) एउटा खाले फोन मात्र मन पराउने युवाहरूको सङ्ख्या पत्ता लगाउनुहोस् ।

Find the number of youths who liked exactly one type of phone.

(d) आइफोन मात्र मन पराउनेको सङ्ख्याभन्दा एन्ड्रोइड फोन मात्र मन पराउनेको सङ्ख्या कति प्रतिशतले घटी वा बढी रहेछ ? तुलना गर्नुहोस् ।

By what percentage the number of youth who liked android phone only is more or less than the number of youth who liked iPhone only? Compare it.

[1 + 1 + 3 + 1]
Asked on 2082 Exam
7.

एउटा समुदायमा रहेका 80 जना युवाहरूको समूहमा गरिएको सर्वेक्षणमा आइफोन र एन्ड्रोइड फोन मन पराउने युवाहरूको अनुपात 3:2 पाइयो । तीमध्ये 10 जनाले दुवै प्रकारको र 10 जनाले अन्य प्रकारको फोन मन पराएको पाइयो ।

In a survey among 80 youths of a community, it is found that the ratio of the number of youths who liked iPhone and Android phone was 3:2. Among them 10 liked both types and 10 liked other types of phone.

(a) यदि I र A ले क्रमशः आइफोन र एन्ड्रोइड फोन मन पराउने युवाहरूको समूह जनाएको भए \(n(I \cap A)\) को मान लेख्नुहोस् ।

If I and A denote the sets of youths who liked iPhone and Android Phone respectively, write the value of \(n(I \cap A)\).

(b) माथिको जानकारीलाई भेन चित्रमा प्रस्तुत गर्नुहोस् ।

Show the above information in a Venn-diagram.

(c) आइफोन मात्र मन पराउने युवाहरूको सङ्ख्या पत्ता लगाउनुहोस् ।

Find the number of youths who liked iPhone only.

(d) आइफोन मात्रै मन पराउने युवाहरूको सङ्ख्या एन्ड्रोइड फोन मात्रै मन पराउने सङ्ख्याभन्दा कति प्रतिशत कम वा बढी रहेछन् ? तुलना गर्नुहोस् ।

By what percentage more or less is the number of youths who liked iPhone only than the number of youths who liked only Android Phone? Compare it.

[1 + 1 + 3 + 1]
Asked on 2081 Exam
8.

कुनै गाउँको 120 घरधुरीमा गरिएको सर्वेक्षणमा 70 घरधुरीले होमस्टेको व्यवसाय र 50 घरधुरीले कृषि व्यवसाय गर्छन् । 30 घरधुरीले अन्य काम गर्छन् । होमस्टे र कृषि व्यवसाय गर्ने घरधुरीहरूको समूहलाई क्रमशः H र A ले जनाइएका छन् ।

In the survey conducted on 120 households of a village, 70 households are doing homestay business, 50 households are doing agriculture business and 30 households do other work. The sets of household doing homestay and agriculture business are denoted by H and A respectively.

(a) होमस्टे र कृषिमध्ये कुनै पनि व्यवसाय नगर्नेको संख्यालाई गणनात्मकता सङ्केतमा लेख्नुहोस् ।

Write the cardinality notation of the number of households who do not do any of the homestay and agriculture business.

(b) माथिको जानकारीलाई भेनचित्रमा प्रस्तुत गर्नुहोस् ।

Present the above information in venn-diagram.

(c) एउटा मात्र व्यवसाय गर्ने घरधुरीको सङ्ख्या निकाल्नुहोस् ।

Find the number of households doing only one business.

(d) अन्य काम गर्ने 10 घरधुरीले होमस्टे व्यवसाय सुरु गर्न थाले भने होमस्टे र कृषि व्यवसाय गर्ने घरधुरीको अनुपात निकाल्नुहोस् ।

If 10 households who do other work start home stay business, find the ratio of homestay and agriculture business households.

[1 + 1 + 3 + 1]
Asked on 2081 Exam
9.

450 जना मानिसहरूमा गरिएको एउटा सर्वेक्षणमा 200 जनाले चिया, 250 जनाले कफि मन पराएको पाइयो । 50 जनाले यी दुईमध्ये कुनै पनि मन पराएनन् ।

In a survey of 450 people, 200 people liked tea and 250 people liked coffee. But 50 people did not like any of these two drinks.

(a) यदि T र C ले क्रमश: चिया र कफि मन पराउने मानिसहरूको समूहलाई जनाउँछ भने \(n(\overline{T \cup C})\) को गणनात्मकता लेख्नुहोस् ।

If T and C denote the set of people who like tea and coffee respectively, write the cardinality of \(n(\overline{T \cup C})\).

(b) माथिको जानकारीलाई भेनचित्रमा प्रस्तुत गर्नुहोस् ।

Present the above information in a Venn diagram.

(c) चिया मात्र मन पराउने मानिसहरूको सङ्ख्या पत्ता लगाउनुहोस् ।

Find the number of people who liked tea only.

(d) चिया र कफि दुवै मन पराउने मानिसको सङ्ख्या र कफि मात्र मन पराउने मानिसको सङ्ख्याबिच तुलना गर्नुहोस् ।

Compare the number of people who like both tea and coffee with the number of people who like coffee only.

[1 + 1 + 3 + 1]
Asked on 2081 Exam
10.

एउटा विद्यालयको कक्षा दशका 100 जना विद्यार्थीमध्ये 60 जनाले अङ्ग्रेजी र 50 जनाले गणित मन पराएछन् । तर 20 जनाले यी दुईमध्ये कुनै पनि विषय मन पराएनन् । अङ्ग्रेजी मन पराउने र गणित मन पराउने विद्यार्थीहरूको समूहलाई क्रमशः 'E' र 'M' ले जनाइएका छन् ।

Out of 100 students of class ten of a school, 60 liked English and 50 like mathematics. But 20 did not like any of these two subjects. The sets of students who liked English and Mathematics are denoted by 'E' and 'M' respectively.

(a) दुईमध्ये कुनै पनि विषय मन नपराउने विद्यार्थीहरूको समूहलाई गणनात्मकता सङ्केतमा लेख्नुहोस् ।

Write the set of the students who did not like any of these two subjects in the cardinality notation.

(b) दुवै विषय मन पराउने विद्यार्थी सङ्ख्यालाई \(x\) मानी दिइएको जानकारीलाई भेन चित्रमा प्रस्तुत गर्नुहोस् ।

Present the given information in a Ven-diagram assuming \(x\) for the number of students who liked both subjects.

(c) एउटा मात्र विषय मन पराउने विद्यार्थीहरूको सङ्ख्या पत्ता लगाउनुहोस् ।

Find the number of students who liked exactly one subject.

(d) यदि दुईमध्ये कुनै पनि विषय मन नपराउने विद्यार्थीको सङ्ख्या 30 भएको अवस्थामा दुवै विषय पन पराउने विद्यार्थी सङ्ख्यामा के असर पर्छ ? पत्ता लगाउनुहोस् ।

If 30 students did not like any of these two subjects, what will be the effect in the number of students who liked both subjects? Find it.

[1 + 1 + 3 + 1]
Asked on 2081 Exam
11.

360 जना विद्यार्थीहरूको समूहमा सर्वेक्षण गर्दा 100 जनाले वास्केटवल खेल मात्र मन पराउँछन् । 60 जनाले क्रिकेट खेल मात्र मन पराउँछन् र 100 जनाले दुवै खेलमध्ये कुनै पनि मन पराउँदैनन् ।

In a survey of a group of 360 students, 100 students like basketball game only, 60 like cricket game only and 100 do not like any of the two games.

(a) यदि 'B' र 'C' ले क्रमशः वास्केटवल र क्रिकेट खेल मन पराउने विद्यार्थीहरूको समूह जनाउँदछन् भने \(n(\overline{BUC})\) को मान कति हुन्छ ? लेख्नुहोस् ।

If 'B' and 'C' denote the set of students who like basketball and cricket game respectively, then what is the value of \(n(\overline{BUC})\)? Write it.

(b) माथिको तथ्यलाई भेन चित्रमा प्रस्तुत गर्नुहोस् ।

Present the above information in a venn-diagram.

(c) दुवै खेल मन पराउने विद्यार्थीहरूको सङ्ख्या पत्ता लगाउनुहोस् ।

Find the number of students who like both the games.

(d) यदि दोस्रो पटक फेरि सर्वेक्षण गर्दा कुनै पनि खेलमा रुची नभएका सबैले क्रिकेट खेल मन पराए र अन्य यथावत पाइयो भने कम्तिमा एउटा खेल मन पराउने विद्यार्थीहरूको सङ्ख्या कति हुनेथियो ? पत्ता लगाउनुहोस् ।

If everyone who is not interested in any game liked cricket game in the second survey and found others to be same then, what would be the number of students who like at least one game? Find it.

[1 + 1 + 3 + 1]
Asked on 2081 Exam
12.

एउटा विद्यालयको कक्षा दशमा अध्ययनरत विद्यार्थीहरूलाई जनकपुर र विरगञ्जमध्ये कुनै ठाउँमा शैक्षिक भ्रमणमा जान उपयुक्त हुन्छ भनी गरिएको सर्वेक्षणमा 60 जनाले जनकपुर, 40 जनाले विरगञ्ज र 20 जना विद्यार्थीहरूले दुवै ठाउँ उपयुक्त हुने बताए भने 10 जनाले यी दुईमध्ये कुनै पनि ठाउँ उपयुक्त नहुने बताए ।

In a survey conducted on the students studying in class ten of a school to determine suitable place for educational tours to Janakpur and Birgunj. It was found that 60 students considered Janakpur, 40 students considered Birgunj and 20 students considered both places suitable but 10 students did not consider any of the two places suitable.

(a) 'J' र 'B' ले क्रमशः जनकपुर र विरगञ्ज उपयुक्त हुन्छ भन्ने विद्यार्थीहरूको समूहलाई जनाउँछ भने दुवै ठाउँ उपयुक्त हुन्छ भन्ने विद्यार्थीहरूको समूहलाई गणनात्मकता सङ्केतमा लेख्नुहोस् ।
If 'J' and 'B' denote the set of students who prefer Janakpur and Birgunj respectively. Write the set of students who considered both places suitable in cardinality notation.

(b) माथिको जानकारीलाई भेनचित्रमा प्रस्तुत गर्नुहोस् ।
Present the above information in a Venn diagram.

(c) उक्त विद्यालयमा कक्षा दशमा कति जना विद्यार्थीहरू अध्ययनरत रहेछन् ? पत्ता लगाउनुहोस् ।
How many students are studying in class ten in the school? Find it.

(d) यदि सर्वेक्षणमा कुनै पनि ठाउँ उपयुक्त नहुने बताएका 10 जना विद्यार्थीहरूले जनकपुर उपयुक्त स्थान हो भनेको भए जनकपुर मात्र उपयुक्त स्थान भन्ने र विरगञ्ज मात्र उपयुक्त स्थान भन्ने विद्यार्थीहरूको अनुपात कति हुने थियो ? पत्ता लगाउनुहोस् ।
If 10 students who did not consider any of the two places suitable had said Janakpur as a suitable place, then what would be the ratio of students who consider only Janakpur and only Birgunj as the suitable place? Find it.

[1 + 1 + 3 + 1]
Asked on 2081 Exam
13.

160 जना मानिसहरूको समूहमा गरिएको सर्वेक्षणमा स्याउ मात्र र सुन्तला मात्र मन पराउने मानिसहरूको सङ्ख्या क्रमशः 75 र 45 छन् । जसमध्ये 23 जनाले दुईमध्ये कुनै पनि मन पराउदैनन् ।

A survey conducted among 160 people, it was found that the number of the people who like only apple and only orange are 75 and 45 respectively. Among them 23 people do not like any of these two.

(a) स्याउ मन पराउने मानिसको समूहलाई A र सुन्तला मन पराउने मानिसको समूहलाई O ले जनाउँदा कुनै पनि फलफुल मन नपराउने मानिसको सङ्ख्यालाई गणनात्मकता संकेतमा लेख्नुहोस् ।

'A' represents the set of people who like apple and 'O' represents the set of people who like orange then write the cardinality notation of the number of people who don't like any of these fruits.

(b) माथिको जानकारीलाई भेन चित्रमा प्रस्तुत गर्नुहोस् ।

Present the above information in a Venn diagram.

(c) स्याउ मन पराउने मानिसको सङ्ख्या पत्ता लगाउनुहोस् ।

Find the number of people who like apple.

(d) स्याउ मन पराउने र सुन्तला मन पराउने मानिसहरूको सङ्ख्याविच तुलना गर्नुहोस् ।

Compare the number of people who like apple and who like orange.

[1 + 1 + 3 + 1]
Asked on 2081 Exam
14.

एउटा माध्यमिक विद्यालयको कक्षा दशमा अध्ययनरत 120 जना विद्यार्थीहरूको समूहमा सर्वेक्षण गर्दा 60 जनाले क्रिकेट खेल मन पराएको, 55 जनाले बास्केटबल खेल मन पराएको र 20 जनाले यीमध्ये कुनै पनि खेल मन नपराएको पाइयो ।
In a survey conducted among 120 students studying in class Ten of a secondary school, it was found that 60 students liked cricket game, 55 students liked basketball game and 20 students did not like any of these games.

(a) यदि C र B ले क्रमशः क्रिकेट र बास्केटबल खेल मन पराउने विद्यार्थीहरूको समूहलाई जनाउँदछ भने \(n(\overline{B \cup C})\) को गणनात्मकता लेख्नुहोस् ।
If C and B denote the sets of students who liked cricket and basketball game respectively, write the cardinality of \(n(\overline{B \cup C})\).

(b) माथिको जानकारीलाई भेनचित्रमा प्रस्तुत गर्नुहोस् ।
Present the above information in a Venn-diagram.

(c) क्रिकेट खेल मात्र मन पराउने विद्यार्थीहरूको सङ्ख्या पत्ता लगाउनुहोस् ।
Find the number of students who liked cricket game only.

(d) क्रिकेट खेल मात्र मन पराउने र बास्केटबल मात्र मन पराउने विद्यार्थी सङ्ख्या बीच तुलना गर्नुहोस् ।
Compare the number of students who liked cricket game only and who liked basketball game only.

[1 + 1 + 3 + 1]
Asked on 2080 Exam
15.

नेपाल आएका 50 जना पर्यटकहरूलाई पोखरा र लुम्बिनीमध्ये कुन ठाउँ घुम्न मन पर्छ भनी सोधिएको सर्वेक्षणबाट प्राप्त विवरण तल उल्लेख गरिएको छ ।

A survey was conducted among 50 tourists arrived in Nepal asking them about preference of two cities Pokhara and Lumbini. Findings are given below:

20 जना पर्यटकहरूले पोखरा मात्र मन पराउँछन् । (20 tourists like Pokhara only.)
15 जना पर्यटकहरूले लुम्बिनी मात्र मन पराउँछन् । (15 tourists like Lumbini only.)
10 जना पर्यटकहरूले यी मध्ये कुनै पनि सहर मन पराउदैनन् । (10 tourists do not like any of these cities.)

a) पोखरा मन पराउने पर्यटकहरूको समूहलाई P र लुम्बिनी मन पराउने पर्यटकहरूको समूहलाई L मानी यी मध्ये कुनै पनि सहर मन नपराउने पर्यटकहरूको समूहलाई गणनात्मक संकेतमा लेख्नुहोस् ।
Write the set of tourists who don't like any of these cities in cardinal notation by letting the sets of tourists who like Pokhara by P and Lumbini by L.

b) माथिको तथ्यलाई भेनचित्रमा प्रस्तुत गर्नुहोस् ।
Present the above information in a venn-diagram.

c) पोखरा मन पराउने पर्यटकको संख्या पत्ता लगाउनुहोस् ।
Find the number of tourists who liked Pokhara.

d) के एउटा मात्र ठाउँ घुम्न मन पराउने पर्यटकहरूको संख्या कुनै पनि ठाउँ घुम्न मन नपराउनेको भन्दा बढि छ ? कारण लेख्नुहोस् ।
Is the number of tourists who like to visit only one place more than that who like to visit neither of the places? Give reason.

[1 + 1 + 3 + 1]
Asked on 2080 Exam
16.

एउटा माध्यमिक विद्यालयका कक्षा X का 20 जना विद्यार्थीहरूमाभ्र एउटा सर्वेक्षण गरियो । जसमा 14 जनाले फुटवल र 12 जनाले भलिवल खेलमा भाग लिएछन् । प्रत्येक विद्यार्थीले कम्तिमा एउटा खेलमा भाग लिएका रहेछन् ।

A survey was conducted among 20 students of a Secondary School of class X, where 14 students participated in football and 12 students in volleyball game. Every student have participated in at least one game.

a) फुटवलमा भाग लिने विद्यार्थीहरूको समूहलाई F र भलिवलमा भाग लिने विद्यार्थीहरूको समूहलाई V मानी फुटवल अथवा भलिवलमा भाग लिने विद्यार्थीहरूको समूहलाई गणनात्मकता संकेतमा लेख्नुहोस् ।

Assuming the set of students who participated in football as F and volleyball as V, write the cardinality of set of students who participated in volleyball or football.

b) माथिको तथ्यलाई भेन चित्रमा प्रस्तुत गर्नुहोस् ।

Present the above information in the Venn diagram.

c) भेन चित्र प्रयोग गरी एउटा मात्र खेलमा सहभागी हुने विद्यार्थीको सङ्ख्या पत्ता लगाउनुहोस् ।

Find the number of students participating in exactly one game by using Venn diagram.

d) अस्वस्थताका कारणले 2 जना फुटवल मात्र खेल्छौ भनेका खेलाडीले सहभागिता नजनाउँदा कुन समूहको गणनात्मकतामा के असर पर्छ ? कारणसहित लेख्नुहोस् ।

If two students who response only football are unable to play the game due to health problem, the cardinality of which set is changed? Give reason.

[1 + 1 + 3 + 1]
Asked on 2080 Exam
17.

केही मानिसहरूको समूहमा गरिएको सर्वेक्षणमा 550 जनाले खेलकुद, 600 जनाले संगीत, 350 जनाले दुवै मन पराए तर 200 जनाले यी दुई खेलकुद र संगीतमध्ये कुनै पनि मन पराएनन् ।

In a survey of group of people it was found that 550 of them liked sports, 600 liked music, 350 liked both of them and 200 did not like any of these two sports and music.

a) खेलकुद मन पराउने मानिसहरूको समूहलाई S र संगीत मन पराउने मानिसहरूको समूहलाई M मानी दुवै विधा मन पराउने मानिसहरूको समूहलाई गणनात्मक संकेतमा लेख्नुहोस् ।

By letting set of people who like sports as S and music as M, write the set of the people who liked both sports and music in cardinal notation.

b) माथिको तथ्यलाई भेन चित्रमा प्रस्तुत गर्नुहोस् ।

Present the above information in a Venn-diagram.

c) भेन चित्रको प्रयोग गरी सर्वेक्षणमा सहभागी जम्मा मानिसहरूको संख्या पत्ता लगाउनुहोस् ।

Find the total number of people who participated in the survey using Venn diagram.

d) खेलकुद मात्र र संगीत मात्र मन पराउने मानिसहरूविच अनुपातमा तुलना गर्नुहोस् ।

Compare the number of people who liked only sports and only music in ratio.

[1 + 1 + 3 + 1]
Asked on 2080 Exam
18.

एउटा विद्यालयका 50 जना विद्यार्थीहरूलाई साधारण धार वा प्राविधिक धारमध्ये कुन धार अध्ययन गर्न रुची छ भनी सोधिएको सर्वेक्षणबाट प्राप्त विवरण तल उल्लेख गरिएको छ ।

The details obtained from a survey of 50 students of a school asking them about their further interests in study general stream or technical stream is given below.

34 जनाले साधारण धार अध्ययन गर्न मन पराउँछन् ।

34 students liked to study general stream.

24 जनाले प्राविधिक धार अध्ययन गर्न मन पराउँछन् ।

24 students liked to study technical stream.

9 जनाले यी दुवै धार अध्ययन गर्न मन पराउँछन् ।

9 students liked to study both the streams.

a) साधारण धार र प्राविधिक धार अध्ययन गर्न मन पराउने विद्यार्थीहरूको समूहहरूलाई क्रमश : G र T मानी दुवै धार अध्ययन गर्न मन पराउने विद्यार्थीहरूको समूहलाई गणनात्मकता संकेतमा लेख्नुहोस् ।
Write the cardinality of the set of students who liked both of the streams by letting the sets of students who like general stream and technical stream by G and T respectively.

b) माथिको तथ्यलाई भेनचित्रमा प्रस्तुत गर्नुहोस् ।
Present the above information in a Venn diagram.

c) भेनचित्रको प्रयोग गरी यीमध्ये कुनै पनि धार मन नपराउने विद्यार्थीको संख्या पत्ता लगाउनुहोस् ।
Find the number of students who did not like any of the streams using Venn diagram.

d) यदि दुवै धार अध्ययन गर्नेको सङ्ख्या 24 भएमा भेनचित्रको अवस्थामा परिवर्तन हुन्छ ? कारण दिनुहोस् ।
If 24 students liked to study both the streams, the condition of Venn diagram is changed? Give reason.

[1 + 1 + 3 + 1]
Asked on 2080 Exam
19.

एउटा सर्वेक्षणमा सहभागी भएका मानिसहरूमध्ये 80 जना मानिसहरूले सुन्तला मन पराउने र 85 जना मानिसहरूले आँप मन पराउने र 75 जना मानिसहरूले दुवै मन पराउने जानकारी दिंदा 50 जना मानिसहरूले यीमध्ये कुनै पनि फलफूल मन पराएनन् ।

Out of the people who participated in a survey, 80 people liked oranges, 85 people liked mangoes and 75 people liked both, while 50 people did not like any of these fruits.

a) सुन्तला मन पराउने मानिसहरूको समूहलाई O र आँप मन पराउने मानिसहरूको समूहलाई M मानी दुवै फलफूल मन पराउने मानिसहरूको समूहलाई गणनात्मक संकेतमा लेख्नुहोस् ।

Assuming the set of people who like oranges as O and mangoes as M, write the set of people who like both fruits in the cardinality notation.

b) माथिको तथ्यलाई भेन चित्रमा प्रस्तुत गर्नुहोस् ।

Present the above information in a Venn diagram.

c) भेन चित्रको प्रयोग गरी सर्वेक्षण गरिएको जम्मा मानिसहरूको संख्या पत्ता लगाउनुहोस् ।

Find the total number of people who participated in the survey by using Venn diagram.

d) एउटा मात्र फलफूल मन पराउने मानिसहरूको संख्या र दुवै फलफूल मन पराउने मानिसहरूको संख्या तुलना गर्नुहोस् ।

Compare the number of people who like only one fruit and the number of people who like both the fruits.

[1 + 1 + 3 + 1]

Asked on 2082 Exam
2.

एक जना मानिसले व्यापार गर्न भनेर नजिककको आफन्तसँग प्रतिवर्ष 10% वार्षिक चक्रीय व्याजदरमा रु.1,50,000 दुई वर्षका लागि ऋण लिएको रहेछ । उक्त मानिसले ब्याज र ऋण केही कम गर्न आफन्तलाई एक वर्षको अन्त्यमा रु.85,000 तिरेछन् ।
A man took a loan of Rs.1,50,000 for two years at the rate of compound interest 10% per annum compounded annually from his close relative for the purpose of business. He paid Rs.85,000 at the end of the first year to reduce the interest and some loan.

(a) वार्षिक चक्रीय ब्याज निकाल्ने सूत्र लेख्नुहोस् ।
Write the formula for finding annual compound interest.

(b) उनले एक वर्षको अन्त्यमा ऋणमा कति रकम फिर्ता गरेछन् ? पत्ता लगाउनुहोस् ।
How much money did he return as the loan at the end of one year? Find it.

(c) उनले जम्मा कति रकम तिरेर समयमा ऋण चुक्ता गरेछन् ? पत्ता लगाउनुहोस् ।
How much total money did he pay to clear the debt on time? Find it.

[1 + 2 + 2]
Asked on 2082 Exam
6.

पेम्बाले सकुन्तलासँग 6% वार्षिक साधारण ब्याजदरले 2 वर्षका लागि रु.70,000 सापटी लिएछन् र उनले त्यति नै समयका लागि उक्त रकम उही ब्याजदरले वार्षिक चक्रीय ब्याज पाउने गरी लगानी गरेछन् ।

Pemba borrowed Rs.70,000 from Sakuntala for 2 years at the rate of 6% p.a. simple interest. He invested the same principal for the same time at the same rate of compound interest compound annually.

(a) साँवाँ (P), समय 'T' वर्ष र ब्याजदर 'R%' प्रतिवर्ष हुँदा वार्षिक चक्रीय ब्याज पत्ता लगाउने सूत्र लेख्नुहोस् ।

If principal 'P', Time 'T' and rate of interest 'R%' per year, write the formula to find annual compound interest.

(b) पेम्बाले 2 वर्षमा प्राप्त गर्ने चक्रीय ब्याज पत्ता लगाउनुहोस् ।

Find the compound interest received by Pemba in 2 years.

(c) 2 वर्षको साधारण ब्याज र चक्रीय ब्याजको तुलना गर्नुहोस् ।

Compare the simple interest and compound interest of 2 years.

[1 + 2 + 2]
Asked on 2082 Exam
7.

एक जना कृपकले कुखुरा पालनका लागि कृषि विकास बैङ्कबाट रु.5,00,000 ऋण लिएछन् । वार्षिक 8% का व्याजदरले उसले 2 वर्षमा ऋण चुक्ता गर्ने लक्ष्य लिएछ । बैङ्कले अर्धवार्षिक रूपमा चक्रीय व्याज हिसाब गर्दछ ।

A farmer has taken Rs.5,00,000 loan from Agriculture development bank for his poltry farm. He aimed to pay back the loan in 2 years at the rate of 8% per annum. Bank calculated the interest compounded semiannually.

(a) 2 वर्षमा अर्धवार्षिक रूपमा कति पटक ब्याज गणना गरिन्छ, लेख्नुहोस् ।

How many times the compound interest semiannually is calculated in 2 years? Write it.

(b) उक्त किसानले पहिलो वर्षको अन्त्यमा केही साँवा र ब्याज गरी जम्मा रु.3,00,000 ऋण तिरेछ र बाँकी अर्को वर्षमा चुक्ता गर्दा उसले कति रकम तिर्लाँ ? पत्ता लगाउनुहोस् ।

The farmer paid Rs.3,00,000 at the end of first year with some principal and interest. How much does he need to clear the dept in next year? Find it.

(c) यदि कृपकले 2 वर्षको अन्त्यमा एकमुष्ट ऋण तिरेको भए पहिलेको भन्दा कति कम वा बढी ब्याज तिर्नु पथ्यो ? पत्ता लगाउनुहोस् ।

If the farmer had paid the loan at the end of two years, how much less or more interest should he have to pay than before? Find it.

[1 + 2 + 2]
Asked on 2081 Exam
9.

एक जना किसानले 2 वर्षका लागि एउटा सहकारीमा रु.50,000 वार्षिक चक्रिय व्याज \(8\%\) प्रति वर्षका दरले पाउने गरी जम्मा गरेछ ।

A farmer deposited Rs. 50,000 in a co-operative for 2 years to get the annual compound interest at the rate of \(8\%\) per annum.

(a) त्रैमासिक चक्रिय व्याजमा एक वर्षमा कति पटक व्याज गणना गरिन्छ ? लेख्नुहोस् ।

How many times the interest is calculated in the quarterly compound interest in one year? Write it.

(b) किसानले 2 वर्षको अन्त्यमा कति वार्षिक चक्रिय व्याज प्राप्त गर्दछ ? पत्ता लगाउनुहोस् ।

How much annual compound interest will the farmer receive at the end of 2 years? Find it.

(c) सोही रकमको उही व्याजदर र अवधिको अर्धवार्षिक चक्रिय व्याज वार्षिक चक्रिय व्याजभन्दा कतिले बढी हुन्छ ? पत्ता लगाउनुहोस् ।

By how much the semi-annual compound interest is more than the annual compound interest of the same sum at the same rate and for the same period of time? Find it.

[1 + 2 + 2]
Asked on 2081 Exam
11.

राजनले रामसँग 2 वर्षका लागि \(10\%\) साधारण व्याजको दरले रु.10,000 सापटी लिएछ र त्यतिनै वेला सो रकम समान समय र उही व्याज दरमा वार्षिक चक्रीय व्याजमा श्यामलाई सापटी दिएछ ।

Rajan borrowed a loan of Rs.10,000 from Ram for 2 years at the rate of 10% simple interest. Immediately, Rajan lent the same sum for same time and same rate of interest compounded annually to Shyam.

(a) दिइएको सन्दर्भअनुसार, 2 वर्षको अन्त्यमा हुने साधारण व्याज र चक्रीय व्याज मध्ये कुन बढी हुन्छ ? लेख्नुहोस् ।

According to the given context, which interest is more among simple interest and compound interest for 2 years? Write it.

(b) राजनले उक्त कारोबारमा 2 वर्षमा कति फाइदा पाए ? पत्ता लगाउनुहोस् ।

How much profit did Rajan get during the transaction of 2 years? Find it.

(c) यदि राजनले उक्त रकम अर्धवार्षिक चक्रीय व्याजदरमा सापटी दिएको भए थप कति व्याज श्यामले दिनु पर्दथ्यो ? पत्ता लगाउनुहोस् ।

How much more interest should Shyam need to pay to Rajan if Rajan had lent the amount at semi-annual compound interest? Find it.

[1 + 2 + 2]
Asked on 2081 Exam
14.

आत्मिकले 2 वर्षका लागि रु.4,00,000 कुनै एउटा बैङ्कमा जम्मा गर्न चाहेका छन् । बैंकले प्रतिवर्ष 10% चक्रीय व्याजदरका दरले आत्मिकलाई तीनओटा विकल्पहरू (वार्षिक चक्रीय व्याज, अर्धवार्षिक चक्रीय व्याज र त्रैमासिक चक्रीय व्याज) दिइएको छ ।
Aatmik wants to deposit Rs.4,00,000 in a bank for 2 years. The bank offers 10% per annum compound interest to Aatmik with three alternates (annual compound interest, semi-annual compound interest and quarterly compound interest).

(a) माथिका तीन विकल्पमध्ये कुन विकल्प प्रयोग गर्दा आत्मिकलाई बढी व्याज प्राप्त हुन्छ ? लेख्नुहोस् ।
Which option among the above three alternates Aatmik has to use to get more interest? Write it.

(b) उनले 2 वर्षको अन्त्यमा अर्धवार्षिक चक्रीय व्याजअनुसार कति चक्रीय व्याज प्राप्त गर्न सक्छन् ? पत्ता लगाउनुहोस् ।
How much compound interest does he receive at the end of 2 years compounded semi annually? Find it.

(c) के आत्मिकले 2 वर्षमा प्राप्त गरेको अर्धवार्षिक चक्रीय व्याज 1 वर्षमा प्राप्त गर्ने त्रैमासिक चक्रीय व्याजको दोब्बर हुन्छ ? गणना गरी पुष्टि गर्नुहोस् ।
Is semi-annual compound interest received by Aatmik in 2 years double than the quarterly compound interest received in 1 year? Justify with calculation.

[1 + 2 + 2]
Asked on 2080 Exam
15.

रामले श्यामसँग 2 वर्षका लागि \(10\%\) वार्षिक चकीय ब्याजका दरले रु. 50,000 सापटी लिएछन् र रामले सो रकम समान समय र ब्याजदरमा प्रतिकलाई अर्धवार्षिक चकीय ब्याजमा लगानी गरेछन् ।

Ram borrowed a sum of Rs. 50,000 from Shyam for 2 years at the rate of \(10\%\) compound interest compounded annually. Ram invested the same sum for the same time and rate of interest to Pratik at the semi-annual compound interest.

a) वार्षिक चकीय ब्याज पत्ता लगाउने सूत्र लेख्नुहोस् ।
Write the formula for finding the annual compound interest.

b) रामले श्यामलाई र प्रतिकले रामलाई तिर्ने ब्याजहरूको गणना गर्नुहोस् ।
Calculate the interests to be paid to Shyam by Ram and to Ram by Pratik.

c) रामले प्रतिकलाई अर्धवार्षिक चकीय ब्याजको सट्टा त्रैमासिक चकीय ब्याजमा ऋण दिएको भए कति कम वा बढी ब्याज पाउने थिए ? गणना गर्नुहोस् ।
If Ram had lent the loan to Pratik in quarterly compound interest instead of semi-annual compound interest, how much less or more interest will he acquire? Calculate it.

[1 + 2 + 1]
Asked on 2080 Exam
16.

डोल्मा 16 वर्षकी छन् । उनी 18 वर्षको हुँदा सवै रकम भिक्ने गरी उनका हजुरबुबाले रु. 50,000 बैंकमा जम्मा गर्न जाँदा बैंकले निम्नानुसारका दुई ओटा विकल्प दिएछ ।

Dolma is 16 years old now. Her grandfather wants to deposit Rs. 50,000 in a bank so that she will withdraw the whole sum at the age of 18 years. While going to the bank there are two options as follows.

पहिलो विकल्प (First Option) दोस्रो विकल्प (Second Option)
5% वार्षिक चक्रीय व्याजदर (5% rate of compound interest annually.) 4.5% अर्धवार्षिक चक्रीय व्याजदर (4.5% rate of compound interest semi-annually.)

a) अर्धवार्षिक चक्रीय व्याज निकाल्ने सूत्र लेख्नुहोस ।

Write the formula for finding semi-annual compound interest.

b) डोल्माको हजुरबुबाले दोस्रो विकल्प अनुसार बैंकमा उक्त पैसा जम्मा गरिदिनुभयो भने उनले कति रकम पाउँछिन् ? पत्ता लगाउनुहोस् ।

If Dolma's grandfather deposits the sum in the bank according to the second option, how much amount will she get? Find it.

c) तपाईंले डोल्माको हजुरबुबालाई कुन विकल्पको सुभाव दिनुहुन्छ ? गणना गरी कारण दिनुहोस् ।

Which option will you suggest to Dolma's grandfather? Give reason with calculation.

[1 + 2 + 2]

Asked on 2081 Exam
9.

एउटा विद्युतीय बस रु.45,00,000 मा किनियो । 2 वर्षमा बसको प्रयोगबाट रु.12,00,000 आम्दानी भयो । बसको मूल्यमा वार्षिक \(10\%\) को दरले ह्रास आउँछ ।

An electric Bus is purchased for Rs.45,00,000. Using the bus for 2 years Rs.12,00,000 is earned. The value of the bus depreciates at the rate of \(10\%\) per annum.

(a) यदि बसको सुरुको मूल्य \(V_0\), वार्षिक ह्रासदर R र बसको T वर्षपछिको मूल्य \(V_T\) भए \(V_T\) लाई \(V_0\), R र T को रूपमा लेख्नुहोस् ।

If the initial price of bus is \(V_0\), annual rate of depreciation is R and price of the bus after T years is \(V_T\) then express \(V_T\) in terms of \(V_0\), R and T.

(b) पहिलो वर्षमा बसको मूल्य कतिले घटेछ ? पत्ता लगाउनुहोस् ।

How much the price of the bus is depreciated in first year? Find it.

(c) यदि 2 वर्षपछि सो बस बिक्की गरियो भने कति प्रतिशत नाफा वा नोक्सान हुन्छ ? पत्ता लगाउनुहोस् ।

If the bus is sold after 2 years, what will be the percentage of profit or loss? Find it.

[1 + 1 + 2]
Asked on 2081 Exam
10.

एउटा गाउँको जनसङ्ख्या 10,000 छ । वार्षिक जनसङ्ख्या वृद्धिदर 4% छ । सो गाउँबाट पहिलो वर्षको अन्त्यमा 100 जना मानिस वसाइ सरेर अन्यत्र गएछन् ।

The population of a village is 10,000. Annual population growth rate is 4%. At the end of first year, 100 people migrated from that village to other places.

(a) उक्त गाउँको एक वर्षपछिको जनसङ्ख्या पत्ता लगाउनुहोस् ।

Find the population of the village after one year.

(b) यदि दोस्रो वर्ष कोही पनि वसाइ सरेनन् भने 2 वर्षपछि सो गाउँको जनसङ्ख्या कति पुग्थ्यो ? पत्ता लगाउनुहोस् ।

If nobody were migrated in second year, what would be the population of the village after 2 years? Find it.

(c) यदि पहिलो वर्ष कोही वसाइ नसरेको भए 2 वर्षमा हुने जनसङ्ख्या वृद्धिमा कतिले फरक पर्थ्यो ? पत्ता लगाउनुहोस् ।

If nobody was migrated in first year, what would be the difference in population growth in 2 years? Find it.

[1 + 2 + 1]
Asked on 2081 Exam
11.

कुनै गाउँको हालको जनसङ्ख्या 20,000 छ । उक्त गाउँमा वार्षिक \(2\%\) का दरले जनसङ्ख्या वृद्धि हुन्छ ।

The population of a village is 20,000. The population increases by 2% annually in the village.

(a) यदि सुरुको जनसङ्ख्या P, जनसङ्ख्या वृद्धिदर R प्रतिवर्ष र T वर्षपछिको जनसङ्ख्या \(P_T\) भए, \(P_T\) पत्ता लगाउने सूत्र लेख्नुहोस् ।

If the initial population is P, growth rate is R per annum and population after T years is \(P_T\) then write the formula to find \(P_T\).

(b) कति वर्षपछि सो गाउँको जनसङ्ख्या 20,808 पुग्छ ? पत्ता लगाउनुहोस् ।

After how many years the population of the village will be 20,808? Find it.

(c) यदि प्रति वर्ष \(3\%\) का दरले जनसङ्ख्या वृद्धि भएको भए 2 वर्षमा सो गाउँको जनसङ्ख्या कतिले बढ्छ ? पत्ता लगाउनुहोस् ।

If the population increases at the rate of 3% per annum, by what number will the population of the village be increased in 2 years? Find it.

[1 + 2 + 1]
Asked on 2081 Exam
14.

एउटा फोटोकपी मेसिन रु. 80,000 मा खरिद गरियो । उक्त मेसिनको प्रयोगबाट 2 वर्षमा रु. 30,000 मात्र आम्दानी भयो । मेसिनको मूल्यमा प्रतिवर्ष 20% का दरले ह्रास आउँछ र 2 वर्षपछि उक्त मेसिन बिक्री गरियो ।
A photocopy machine is purchased for Rs. 80,000. After using it for 2 years, only Rs. 30,000 is earned. The price of machine depreciates annually at the rate of 20% and the machine is sold after 2 years.

(a) मेसिनको सुरुको मूल्य \(V_0\), वार्षिक मिश्रह्रासदर R र T वर्षपछिको मेसिनको मूल्य \(V_T\) भए \(V_T\) लाई \(V_0\), R र T को रूपमा व्यक्त गर्नुहोस् ।
The initial price of a machine is \(V_0\), annual rate of compound depreciation is R and the price of machine after T years is \(V_T\), express \(V_T\) in terms of \(V_0\), R and T.

(b) उक्त मेसिन बिक्री गर्दा भएको कुल नाफा वा नोक्सान रकम पत्ता लगाउनुहोस् ।
Find the total profit or loss amount on selling the machine.

(c) यदि उनले सो मेसिन थप 1 वर्ष प्रयोग गरी बेचेको भए विकी मूल्य खरिद मूल्यभन्दा कतिले कमी वा बढी हुन्थ्यो ? तुलना गर्नुहोस् ।
If he had sold the machine after using it one year more, then by how much the selling price is less or more than the purchased price? Compare it.

[1 + 2 + 1]
Asked on 2080 Exam
16.

एउटा विद्यालयमा वि.सं. 2077 सालमा 1000 जना विद्यार्थीहरू थिए । प्रत्येक 100 जना विद्यार्थीको एक समूहले 10 जना नयाँ विद्यार्थी भर्ना गर्न ल्याउनु पर्ने नियम लागू गरेर विद्यार्थी सङ्ख्या बढाउँदै लगियो ।

In 2077 B.S. there were 1000 students in a school. A rule that a group of 100 students should bring 10 new students for enrolment was imposed to increase the number of students.

a) विद्यार्थी सङ्ख्या बढाउँन वार्षिक कति प्रतिशतको वृद्धि हुनुपर्छ ?

What is the rate of annual growth of students to increase the number of students?

b) उक्त विद्यालयमा वि.स. 2079 सालमा विद्यार्थी सङ्ख्या कति पुगेछन् ? पत्ता लगाउनुहोस् ।

What was the number of students in the school in 2079 B.S.? Find it.

c) के वि.सं. 2082 सालमा सो विद्यालयको जम्मा विद्यार्थीहरूको सङ्ख्या 1600 पुग्छ ? गणना गरी पुष्टि गर्नुहोस् ।

Will the total number of students of the school be 1600 in 2082 B.S.? Justify with calculation.

[1 + 2 + 1]
Asked on 2080 Exam
19.

रामपुरको सुरुको जनसंख्या 2,40,000 र लक्ष्मणपुरको सुरुको जनसंख्या 2,30,000 थियो । रामपुरको जनसंख्या प्रतिवर्ष 4% का दरले बढ्दै जान्छ र लक्ष्मणपुरको जनसंख्या प्रतिवर्ष 5% का दरले घट्दै जान्छ ।

The initial population of Rampur was 2,40,000 and that of Laxmanpur was 2,30,000. The population of Rampur increases by 4% per year and the population of Laxmanpur decreases by 5% per year.

a) T वर्षपछिको जनसङ्ख्या निकाल्ने सूत्र लेख्नुहोस् ।

Write the formula for finding population after T years.

b) 2 वर्षपछि कुन स्थानको जनसंख्या कतिले बढी हुन्छ ? पत्ता लगाउनुहोस् ।

After 2 years which place has more population and by how much? Find it.

c) रामपुरको सुरुको जनसंख्या जति लक्ष्मणपुरको जनसंख्या पुग्नका लागि 2 वर्षमा त्यहाँको जनसंख्या कति प्रतिशतले बढ्नुपर्छ ? पत्ता लगाउनुहोस् ।

By what percentage should the population of Laxmanpur increase in 2 years to reach the same population as the initial population of Rampur? Find it.

[1 + 2 + 1]

Asked on 2082 Exam
1.

नेपाल राष्ट्र बैङ्कको मिति 11/25/2025 को मुद्रा विनिमय दरअनुसार 1 अमेरिकी डलरको खरिददर र विक्रीदर क्रमशः ने.रु.142.48 र ने.रु.143.08 थियो ।

According to the exchange rate of Nepal Rastra Bank on the date of 11/25/2025, the buying rate and selling rate of 1 US dollar were NRs. 142.48 and NRs.143.08 respectively.

(a) अमेरिकी डलर नेपाली रुपैयामा साट्दा खरिददर र विक्रीदरमध्ये कुन प्रयोग हुन्छ ? लेख्नुहोस् ।

Among the buying rate and selling rate, which one is used while exchanging US dollar into Nepalese rupees? Write it.

(b) एकजना अमेरिकन पर्यटकले 3,000 डलर साट्दा कति नेपाली रुपैयाँ पाउन सक्छन् ? पत्ता लगाउनुहोस् ।

How many Nepalese rupees can an American tourist get while exchanging 3,000 dollars? Find it.

(c) नेपाली मुद्रामा 0.5% अवमूल्यनपछिको खरिददर र विक्रीदर तुलना गर्नुहोस् ।

Compare the buying rate and selling rate after 0.5% devaluation in Nepali currency.

(d) अवमूल्यनपछि 3,000 अमेरिकन डलर नेपाली रुपैयाँमा साट्दा पर्यटकलाई कति रकम फाइदा हुन्छ ? पत्ता लगाउनुहोस् ।

How much will the tourist gain while exchanging the 3,000 American dollars into Nepalese rupees after devaluation? Find it.

[1 + 1 + 1 + 2]
Asked on 2082 Exam
2.

एक जना विद्यार्थीले उच्च अध्ययनका लागि अमेरिका जान नेपाली रुपैयाँ 13,00,000 वरावरको अमेरिकन डलर साटेछन् । उक्त दिनको मुद्रा विनिमय दरअनुसार 1 अमेरिकन डलर ($) को बिक्रीदर र खरिददर क्रमशः ने.रु.143.75 र ने.रु.143.15 थियो ।
A student exchanged some American dollar for Nepali rupees 13,00,000 to go to America for his/her higher study. On that day, the selling rate and buying rate of 1 American dollar ($) were NRS. 143.75 and NRS.143.15 respectively.

(a) उक्त विद्यार्थीले ने.रु.13,00,000 को कति अमेरिकन डलर साटेछन् ? पत्ता लगाउनुहोस् ।
How many American dollars was exchanged with NRS. 13,00,000 by the student? Find it.

(b) स्वास्थ्य समस्याका कारण उक्त विद्यार्थी अमेरिका जान नसकेकाले केही समयपछि आफूसँग भएको अमेरिकन डलरलाई नेपाली रुपैयाँमा साट्न गए जुन दिन नेपाली मुद्रा 0.5% ले अधिमूल्यन भएको थियो । सो दिन उक्त विद्यार्थीले कति नेपाली रुपैयाँ पाउँछन् ? पत्ता लगाउनुहोस् ।
Due to health problem of the student, the student could not go to America and after a few days he/she exchanged American dollars into Nepali rupees. On that day, Nepalese currency was revaluated by 0.5%. How many Nepalese rupees did the student get on that day? Find it.

(c) मुद्रा सटहीमा उक्त विद्यार्थीलाई लाभ वा हानी हुनाको कारण लेख्नुहोस् ।
Write the reason of gain or loss in exchanging the currency for the student.

[1 + 2 + 1]
Asked on 2082 Exam
4.

नेपाल राष्ट्र वैङ्कले मिति 2082/08/05 गते प्रकाशन गरेको मुद्रा विनिमयदर अनुसार अमेरिकी डलर (\$) 1 को खरिददर र बिक्रीदर क्रमशः ने.रु. 141.64 र ने.रु. 142.24 थियो ।

The exchange rate published by Nepal Rastra Bank on dated 2082/08/05 states the buying and selling rate for American dollar (\$) 1 were NRs. 141.64 and NRs.142.24 respectively.

(a) नेपाली रुपैयाँलाई अमेरिकन डलरमा साट्न वैङ्कले कुन दर प्रयोग गर्छ ? लेख्नुहोस् ।

Which rate will the bank use to exchange Nepalese rupees into American dollar? Write it.

(b) ने.रु.7,96,544 सँग कति अमेरिकी डलर (\$) साट्न सकिन्छ ? पत्ता लगाउनुहोस् ।

How much American dollar (\$) can be exchanged with NRs.7,96,544? Find it.

(c) यदि केही समयपछि नेपाली रुपैयाँ \(0.3\%\) ले अवमूल्यन भयो भने उक्त डलरलाई पुनः नेपाली रुपैयाँमा साट्दा समग्रमा कति नाफा वा नोक्सान हुन्छ ? पत्ता लगाउनुहोस् ।

If the Nepali rupees is devaluated by \(0.3\%\) after some time, what is the profit or loss made when the US dollar exchanged back in Nepali rupees? Find it.

[1 + 1 + 2]
Asked on 2082 Exam
5.

पेम्बाले विदेश जानका लागि अमेरिकन डलर साट्न बैङ्क गयो । उक्त दिनको मुद्रा विनिमय दरअनुसार अमेरिकन डलर 1 को खरिददर र बिक्रीदर क्रमशः ने.रु.142.84 र ने.रु.143.44 छन् ।

Pemba went to the bank to exchange American dollars in order to go abroad. According to currency exchange rate on that day, the buying rate and the selling rate of 1 American dollar are NRs.142.84 and NRs.143.44 respectively.

(a) मुद्रा विनिमय दरलाई परिभाषित गर्नुहोस् ।

Define currency exchange rate.

(b) पेम्बाले नेपाली रुपैयाँ 2,15,160 को अमेरिकन डलर साट्दा कति डलर पाउँछन् ? पत्ता लगाउँछन् ।

How many American dollar will Pemba get to exchange NRs.2,15,160? Find it.

(c) पेम्बा विविध कारणले विदेश जान नसक्ने भएपछि सोहीदिन उनले साटेको अमेरिकन डलरबाट कति नेपाली रुपैयाँ प्राप्त गर्दछन् ? पत्ता लगाउनुहोस् ।

Due to different circumstances, Pemba can't go abroad. Then how many Nepali rupees will he get back after exchanging American dollars on the same day? Find it.

[1 + 1 + 1]
Asked on 2082 Exam
7.

नेपाल राष्ट्र बैङ्कले निर्धारण गरेको विनिमयदरअनुसार कुनै दिन 1 अष्ट्रेलियन डलरको खरिददार र बिक्रीदर क्रमशः ने.रु.93.20, ने.रु.93.59 रहेको थियो ।

According to Nepal Rastra Bank's exchange rate, the buying and selling rate of 1 Australian dollar were NRs.93.20 and NRs.93.59 respectively in a certain day.

(a) अष्ट्रेलियन डलर 5,000 मा कति नेपाली रुपैयाँ साट्न सकिन्छ ? पत्ता लगाउनुहोस् ।

How much Nepali currency can be exchanged with Australian dollars 5,000? Find it.

(b) यदि नेपाली मुद्रा 1.5% ले अवमूल्यन भए नयाँ विनिमय दर कति होला ? पत्ता लगाउनुहोस् ।

If the Nepalese currency is devaluated by 1.5%, what will be the new exchange rate? Find it.

(c) अवमूल्यनपछि अष्ट्रेलियन डलर 5000 लाई नेपाली रुपैयाँमा साट्दा कति फाइदा वा घाटा हुन्छ होला ? पत्ता लगाउनुहोस् ।

How much profit or loss will be there by exchanging Australian dollars 5000 into Nepalese rupees after devaluation? Find it.

[1 + 1 + 1]
Asked on 2081 Exam
8.

रीता अमेरिकावाट नेपाल आउँदा साथमा 2500 अमेरिकी डलर ($) लिएर आएकी रहिछन् । उनी नेपाल आउँदा अमेरिकी डलरको विनिमयदर निम्नानुसार रहेको थियो ।

खरिद दर \$1 = NRs. 127.35 र विक्रीदर \$1 = NRs. 127.95

When Rita came to Nepal from America, she brought 2500 American dollars ($). When she came to Nepal, the exchange rate of American dollar was as follows.

\$1 = NRs. 127.35 buying rate and \$1 = NRs. 127.95 selling rate

(a) रीताले बैंकवाट नेपालमा रुपियाँ साट्दा कुन विनिमय दर प्रयोग हुन्छ ? लेख्नुहोस् ।

Which exchange rate is used to exchange Nepali currency by Rita from the bank? Write it.

(b) रीताले उनीसँग भएको अमेरिकी डलरलाई नेपाली रुपैयामा साटी पुनः दुई दिन पछि नेपाली रुपैयालाई अमेरिकी डलरमा साट्दा उनलाई कति फाइदा वा घाटा हुन्छ ? पत्ता लगाउनुहोस् ।

What is the profit or loss for Rita if she exchanges the American dollars into Nepali currency and then exchanges Nepali currency into American dollars after two days? Find it.

(c) सोही दिन \$1 = ने.रु. 127.35 र ने.रु. 160 = भा.रु. 100 थियो भने भा.रु. 1,20,000 सँग कति डलर साट्न सकिन्छ ? निकाल्नुहोस् ।

On the same day, the exchange rate of \$1 = NRs. 127.35 and NRs. 160 = Indian Rs. 100. How many dollars can be exchanged with Indian Rs. 1,20,000? Calculate it.

[1 + 2 + 2]
Asked on 2081 Exam
11.

मुद्रा विनियम दरअनुसार कुनै दिनको 1 अमेरिकी डलरको खरिद दर ने.रु. 136.13 र विक्रीदर ने.रु. 137.25 थियो ।

According to the currency exchange rate, the buying rate of 1 American dollar was NRs. 136.13 and selling rate was NRs. 137.25 in a certain day.

(a) तपाईँले अमेरिकी डलर नेपाली रुपियाँमा साट्दा खरिददर र विक्रीदर मध्ये कुन प्रयोग हुन्छ ? लेख्नुहोस् ।

Which rate buying or selling is used when you exchange American dollar into Nepali rupees? Write it.

(b) अमेरिकी पर्यटकले 1000 डलर साट्दा कति नेपाली रुपिया पाउँछन् ? पत्ता लगाउनुहोस् ।

How many Nepali rupees can American tourist get by exchanging 1000 dollars? Find it.

(c) उक्त अमेरिकी पर्यटकले नेपाल बसाइमा ने.रु. 1,01,817.50 खर्च गरेछ भने आफ्नो देश फर्किदा बाँकी रकमको कति अमेरिकी डलर सटही गर्न सक्दछ ? पत्ता लगाउनुहोस् ।

The American tourist spent NRs. 1,01,817.50 while staying in Nepal, how many American dollars can he/she exchange from remaining Nepalese rupees, while returning back to own country? Find it.

[1 + 1 + 2]
Asked on 2081 Exam
12.

मुद्रा विनियम दर अनुसार कुनै समयमा एक अमेरिकन डलर (\$1) वरावर ने.रु. 136.04 थियो ।

According to the money exchange rate of certain time, one American dollar (\$1) was equal to NRs. 136.04.

(a) ने.रु. 20,406 सँग कति अमेरिकी डलर (\$) साट्न सकिन्छ ? पत्ता लगाउनुहोस् ।
How many American dollars (\$) can be exchanged with NRs. 20,406? Find it.

(b) नेपाली मुद्रामा \(2\%\) ले अवमूल्यन हुँदा अमेरिकी डलर 2,500 सँग कति नेपाली रुपियाँ साट्न सकिन्छ ? पत्ता लगाउनुहोस् ।
How many Nepali rupees can be exchanged with American dollars 2,500 when Nepali currency is devaluated by 2%? Find it.

(c) यदि नेपाली मुद्रामा अवमूल्यनको सट्टा \(2\%\) अधिमूल्यन भएको भए अमेरिकी डलर 2500 साट्दा कति कम वा बढी नेपाली रुपियाँ प्राप्त गर्न सकिन्थ्यो ? पत्ता लगाउनुहोस् ।
If the Nepali currency was revaluated up by 2% instead of devaluation, how much less or more Nepali rupees can be obtained while exchanging 2500 American dollars? Find it.

[1 + 2 + 2]
Asked on 2081 Exam
14.

एक जना व्यापारीले अष्ट्रेलियन डलर 1 = ने.रु.86.06 को दरले ने.रु. 1,29,090 सँग अष्ट्रेलियन डलर साटेछन् । केही दिनपछि अष्ट्रेलियन डलरको तुलनामा नेपाली मुद्रा 2% ले अधिमूल्यन भएछ र उक्त दिनमा उनले आफूसँग भएको अष्ट्रेलियन डलर पुनः नेपाली मुद्रामा साटेछन् ।
A businessman exchanged Australian dollars with NRs. 1,29,090 at the exchange rate of Australian dollar 1 = NRs. 86.06. After some days, Nepali currency was revaluated up by 2% in comparison to Australian dollar and on that day he exchanged the Australian dollars into Nepali currency again.

(a) उक्त व्यापारीले कति अष्ट्रेलियन डलर साटेछन् ? पत्ता लगाउनुहोस् ।
How many Australian dollars did the businessman exchange? Find it.

(b) नेपाली मुद्रामा भएको अधिमूल्यनपछि अष्ट्रेलियन डलर साट्दा व्यापारीले कति नेपाली रुपैयाँ प्राप्त गरेछन् ? पत्ता लगाउनुहोस् ।
How many Nepali rupees did the businessman receive when he exchanged Australian dollar after revaluation in Nepali currency? Find it.

(c) उक्त कारोबारमा व्यापारीलाई कति प्रतिशत नाफा वा नोक्सान भएछ ? पत्ता लगाउनुहोस् ।
What profit or loss percent did the businessman make in that transaction? Find it.

[1 + 2 + 1]
Asked on 2080 Exam
15.

अक्टोबर 30, 2023 मा नेपाल राष्ट्र बैंकको मुद्रा विनिमय दर अनुसार अमेरिकी डलर 1 को खरिद दर र विक्री दर क्रमश: ने.रु.132.90 र ने.रु.133.50 थियो ।

On 30th October, 2023 according to the money exchange rate of Nepal Rastra Bank, the buying and selling rates of 1 American dollar were NPR. 132.90 and NPR. 133.50 respectively.

a) उक्त दिन प्रसिद्धीले अमेरिकी डलर (\$)1,000 सँग कति नेपाली रुपैयाँ साट्न सक्छिन् ? पत्ता लगाउनुहोस् ।
How many Nepalese rupees could Prasiddi exchange with American Dollar (\$) 1,000 on that day? Find it.

b) यदि प्रसिद्धीलाई उच्च शिक्षाको लागि अमेरिका जान 5,000 अमेरिकी डलर चाहिन्छ र मुद्रा सटही काउन्टरले सोही दिन साट्नका लागि \(2\%\) कमिसन लियो भने उनलाई कति नेपाली रुपैयाँ चाहियो ? गणना गर्नुहोस् ।
If Prasiddi needed American Dollar (\$) 5,000 to go for higher studies to America and the money exchange counter charged \(2\%\) as commission to exchange the amount on the same day, how many Nepalese rupees did she require? Calculate it.

c) केहि दिनपछि नेपाली मुद्रामा \(1.5\%\) ले अवमूल्यन भएको भए अमेरिकी डलर 1,000 सँग नेपाली रुपियाँ साट्दा अवमूल्यन हुनुभन्दा पहिलेको मूल्यभन्दा कति रुपैयाँ कम वा बढी हुन्थ्यो ? पत्ता लगाउनुहोस् ।
If the Nepalese currency had devaluated by \(1.5\%\), how much rupees would be less or more than the value at the time before devaluation when exchanging Nepalese rupees for American dollars 1,000? Find it.

[1 + 2 + 2]
Asked on 2080 Exam
16.

एक जना व्यक्तिले क्यानाडा भ्रमण गर्न 1 CAD ($) = NRs 97.20 को विनिमय दरमा ने.रु. 9,72,000 मा केही क्यानाडाली डलर साटेछन् । स्वास्थ्यमा समस्याको कारण उनले आफ्नो भ्रमण रद्द गरे र एक साताপছি आफूसँग भएको डलर नेपाली रुपैयाँसँग साटे जुन दिन नेपाली मुद्रामा 2% ले अवमूल्यन भएको थियो ।

A man exchanged some Canadian dollars for NRs. 9,72,000 at the exchange rate of 1 CAD ($) = NRs. 97.20 to visit Canada. He cancelled his tour due to his health problem, so he exchanged his dollars to Nepali rupees after a week. On that day Nepali currency was devaluated by 2%.

a) सुरुमा उनले कति क्यानेडियन डलर किनेका रहेछन् ? पत्ता लगाउनुहोस् ।

How many Canadian dollars did he exchange in the beginning? Find it.

b) नेपाली मुद्रामा अवमूल्यन भएपछिको नयाँ विनिमय दर पत्ता लगाउनुहोस् ।

Find the new exchange rate after the devaluation of Nepalese currency.

c) उक्त मुद्रा साटही गर्दा उसलाई कति रकम नाफा भयो ? पत्ता लगाउनुहोस् ।

How much amount did he gain during these transactions? Find it.

[1 + 1 + 2]
Asked on 2080 Exam
17.

नेपाल राष्ट्र बैंकको मुद्रा विनिमय दर अनुसार कुनै समयमा अमेरिकी डलर 1 को खरिद दर ने.रु.113.92 र बिक्री दर ने.रु.114.72 थियो ।

According to the money exchange rate of Nepal Rastra Bank, the purchasing rate of 1 American dollar was NRs. 113.92 and the selling rate was NRs.114.72 in a certain time.

a) ने.रु.68,590 संग कति अमेरिकी डलर साट्न सकिन्छ ? पत्ता लगाउनुहोस् ।

How many American dollars can be exchanged with NRs.68,590? Find it.

b) नेपाली मुद्रामा 2% ले अवमूल्यन हुंदा अमेरिकी डलर 7500 संग कति नेपाली रुपियाँ साट्न सकिन्छ ? पत्ता लगाउनुहोस् ।

How much Nepali rupees can be exchanged with American dollar 7500 when Nepalese currency is devaluated by 2%? Find it.

c) यदि नेपाली मुद्रामा 2% ले अधिमूल्यन भएको भए अमेरिकी डलर 7500 संग नेपाली रुपियाँ साट्दा अवमूल्यन हुंदाको मूल्यभन्दा कति रुपैयाँ कम वा बढी हुन्छ ? पत्ता लगाउनुहोस् ।

If the Nepalese currency had revaluated by 2% and Nepali Rupees is exchanged with 7500 American dollar, how much rupees would be less or more than the value at the time of devaluation? Find it.

[1 + 2 + 1]
Asked on 2080 Exam
18.

चेतनाथले अध्ययनका लागि अमेरिका जान नेपाली रुपैयाँ 10,00,000 वरावरको अमेरिकन डलर साटेछन् । उक्त दिनको मुद्रा विनिमय दरअनुसार यु एस. डलर 1 को खरिद दर र विकीदार क्रमश: ने.रु. 132.84 र ने.रु. 133.55 थियो ।

Chetnath exchanged some American dollar for NRs. 10,00,000 to go to America for the study. On that day, the buying rate and selling rate of US Dollar ($) 1 were NRs. 132.84 and NRs. 133.55 respectively.

a) उनले ने.रु. 10,00,000 को कति अमेरिकन डलर साट्न सक्छन् ? पत्ता लगाउनुहोस् ।
How many American dollars can he exchange with NRs. 10,00,000? Find it.

b) पारिवारिक समस्याका कारण उनी अमेरिका जान नसकेकोले एक हप्तापछि आफूसँग भएको अमेरिकन डलरलाई नेपाली रुपैयाँमा साट्न गए जुन दिन नेपाली मुद्रामा 5% ले अवमूल्यन भएको थियो । उनले उक्त दिन कति नेपाली रुपैयाँ पाउँछन् ? पत्ता लगाउनुहोस् ।
Due to his family problem, he could not go to America and after a week he exchanged the dollars into Nepalese rupees. On that day Nepalese currency was devaluated by 5%, how much Nepalese rupees did he get on that day? Find it.

c) उक्त नेपाली रुपैयाँ सटहीमा उनलाई लाभ अथवा हानी हुनाको कारण लेख्नुहोस् ।
Write the reason of gain or loss in exchanging Nepalese rupees?

[1 + 2 + 1]

Asked on 2082 Exam
3.

एक जना व्यक्तिको घरमा मोटर पार्किङ गर्न ठाउँ 16 मिटर लम्बाइ र 10 मिटर चौडाइको छ । उक्त पार्किङमा 25 से.मी. लम्बाइ भएका वर्गाकार ढुङ्गाहरू बिछ्याएको छ । एउटा ढुङ्गाको मूल्य रु.20 परेको रहेछ ।

The dimension of motor parking place of a house owner is 16 m long and 10 m broad. Square shaped stones having 25 cm long are laid on the parking. The price of each stone is Rs.20.

(a) उक्त पार्किङमा जम्मा कतिओटा ढुङ्गाहरू बिछ्याइएको रहेछ ? पत्ता लगाउनुहोस् ।

How many total stones are laid on the parking? Find it.

(b) उक्त पार्किङमा ढुङ्गाहरू बिछ्याउने काममा 2 दिन 3 जना कामदारहरूले काम गरेका रहेछन् । प्रत्येक कामदारले दैनिक ज्याला वापत रु.1,800 लिएको रहेछ । उक्त पार्किङमा ढुङ्गा बिछ्याउन लाग्ने जम्मा खर्चको लागत अनुमान गर्नुहोस् ।

To lay down stones on the parking, 3 workers worked for 2 days. Every worker received Rs.1,800 as daily wages. Estimate the total cost of laying stones on the parking.

[2 + 2]
Asked on 2082 Exam
8.

एउटा गाउँपालिकाको 40 घर परिवारलाई खानेपानी वितरण गर्नका लागि निर्माण गरिएको वृत्ताकार आधार भएको ट्याङ्कीको चित्रमा दिइएको छ । जुन वेलना र अर्धगोला मिली बनेको छ । वेलनाको उचाइ 4.2 मिटर र आधारको व्यास 7 मिटर छन् ।

A water tank with circular base built to distribute drinking water for 40 household in a rural municipality is given in the figure. Which is made with the combination of cylinder and hemi-sphere. The height of the cylinder is 4.2 meter and diameter of the base is 7 meter.

[Figure: Combined water tank of cylinder and hemisphere, cylinder height 4.2m, base diameter 7m]

(a) उक्त ट्याङ्कीको आधारको क्षेत्रफल पत्ता लगाउने सूत्र लेख्नुहोस् ।

Write the formula to find the base area of that tank.

(b) उक्त ट्याङ्की पुरा भर्न कति लिटर पानी आवश्यक पर्ला ? पत्ता लगाउनुहोस् ।

How much liter of water is required to fill the whole tank? Find it.

(c) प्रत्येक दिन सबै परिवारलाई बराबर मात्रामा पानी वितरण गर्दा भरिएको ट्याङ्कीको एक चौथाइ पानी खर्च हुन्छ । प्रति लिटर 4 पैसाका दरले एक परिवारले एक महिनामा पानी उपभोग गरेवापत कति रकम तिर्नुपर्छ ? पत्ता लगाउनुहोस् ।

If equal amount of water is being distributed to all the household everyday then one fourth water is consumed of full tank. How much amount should a family pay for consuming water in a month at the rate of 4 paisa per liter? Find it.

[1 + 2 + 1]
Asked on 2082 Exam
12.

एउटा पर्खालको लम्बाइ, चौडाइ, उचाइ क्रमशः 20 मी., 30 से.मी. र 5 मी. छ । उक्त पर्खाल बनाउन 25 से.मी. × 12 से.मी. × 5 से.मी. आकारका इँटाहरू प्रयोग गरिन्छ । साथै उक्त पर्खालको \(10\%\) भाग सिमेन्ट र बालुवाको जोनीले ओगट्छ ।

The length, breath and height of a wall are 20 m, 30 cm and 5 m respectively. The bricks of size 25 cm × 12 cm × 5 cm are used to construct the wall. Also \(10\%\) part of the wall is occupied by the joints of cement and sand.

(a) उक्त पर्खाल बनाउन कतिओटा इँटाहरू प्रयोग भएका छन् ? पत्ता लगाउनुहोस् ।

How many bricks are used to construct the wall? Find it.

(b) एक ट्रिपमा 2,000 इँटा ढुवानी गरिन्छ र सो वापत भाडा रु.600 लाग्छ । प्रति 1,000 इँटाको रु.13,500 को दरले उक्त पर्खाल बनाउन प्रयोग हुने इँटाको जम्मा लागत अनुमान गर्नुहोस् ।

2,000 bricks are loaded in a trip and the rent of it is Rs.600. Estimate the cost of bricks used to construct the wall at the rate of Rs.13,500 per 1,000 bricks.

[2 + 2]
Asked on 2082 Exam
14.

दिइएको संयुक्त ठोसको जम्मा उचाइ 54 से.मि. र बेलनाकार भागको उचाइ 30 से.मि. छ । सोलीको छड्के उचाइ 25 से.मि. छ ।

The total height of the given combined solid is 54 cm and height of the cylindrical part is 30 cm. The slant height of the conical part is 25 cm.

[Figure: Combined solid of cone on top of cylinder; cone slant height 25cm, cylinder height 30cm, base diameter [unclear]cm, total height 54cm]

(a) सोलीको छड्के उचाइ \((l)\) र ठाडो उचाइ \((h)\) दिइएको अवस्थामा सोलीको आधारको अर्धव्यास निकाल्ने सूत्र लेख्नुहोस् ।

Write the formula to find the radius of base of cone when slant height \((l)\) and vertical height \((h)\) of cone are given.

(b) सो ठोस वस्तुको आयतन पत्ता लगाउनुहोस् ।

Find the volume of that solid object.

(c) यदि यसलाई पगालेर 3.5 मिलिमिटर अर्धव्यास भएको तार बनाइयो भने तारको लम्बाइ कति हुन्छ ? पत्ता लगाउनुहोस् ।

If it is melted to form a cylindrical wire of radius 3.5 mm, what is the length of the wire? Find it.

[1 + 2 + 1]
Asked on 2081 Exam
23.

दिइएको ठोस वस्तु सोली र अर्धगोला मिली बनेको छ । सोली र अर्धगोलाका व्यासहरू बराबर छन् र ठोस वस्तुको जम्मा उचाई 17 से.मि. र आधारको व्यास 10 से.मि. छन् ।

Given solid object is made up of a cone and hemisphere. The diameters of the base of a cone and hemisphere are equal and the total height of object is 17 cm and diameter of base is 10 cm.

[Figure: Solid object made of cone on top of hemisphere, total height 17cm, base diameter 10cm]

(a) अर्धगोलाको उचाइ र अर्धव्यासको सम्बन्ध लेख्नुहोस् ।

Write the relation between height and radius of hemisphere.

(b) उक्त ठोस वस्तुको पूरा सतहको क्षेत्रफल पत्ता लगाउनुहोस् ।

Find the total surface area of solid object.

(c) उक्त ठोस वस्तुको सतहमा प्रति वर्ग सेन्टिमिटर 40 पैसाका दरले रङ लगाउँदा रु.150 पर्याप्त हुन्छ ? हिसाव गरी कारण दिनुहोस् ।

Will the amount of Rs. 150 be sufficient to color the surface of the solid object at the rate of 40 paisa per square cm? Give reason with calculation.

[1 + 3 + 1]
Asked on 2081 Exam
26.

दिइएको चित्रमा, एउटा ठोस वस्तु समान अर्धव्यास भएका वेलना र सोली मिली बनेको छ । उक्त ठोस वस्तुमा वेलनाकार भागको लम्बाइ 28 से.मी. र सोली भागको छड्के उचाइ 17 से.मी. छ । वेलनाकार भागको आयतन 5632 घन से.मी. छ ।

In the given figure, a combined solid object is formed with the combination of cylinder and cone having same radius. In the solid object, the length of cylindrical part is 28 cm and the slant height of conical part is 17 cm. The volume of the cylindrical part is 5632 cubic cm.

[Figure: Combined solid object: cylinder of length 28cm and cone with slant height 17cm, radius shown as 17cm]

(a) उक्त ठोस वस्तुको आधार कस्तो आकारको छ ? लेख्नुहोस् ।

What type is the shape of the base of solid object? Write it.

(b) सोली भागको उचाइ र वेलनाकार भागको लम्बाइ तुलना गर्नुहोस् ।

Compare the height of conical part and the length of cylindrical part.

(c) के वेलनाकार भागको आयतन सोली भागको आयतनको पाँच गुणा छ ? गणना गरी पुष्टि गर्नुहोस् ।

Is the volume of cylindrical part five times the volume of conical part? Justify with calculation.

[1 + 2 + 1]
Asked on 2081 Exam
36.

एउटा आयताकार कक्षाकोठाको लम्बाइ, चौडाइ र उचाइ क्रमशः 18 फिट, 14 फिट र 10 फिट छन् । उक्त कक्षाकोठामा 6 फिट × 4 फिट नाप भएका दुईओटा भ्यालहरू र 6 फिट × 3 फिट का दुईओटा ढोकाहरू छन् ।

The length, breadth and height of a rectangular classroom are 18 ft, 14 ft and 10 ft respectively. In the classroom, there are two windows with size 6 ft × 4 ft and two doors with size 6 ft × 3 ft.

(a) ढोका र भ्याल बाहेक उक्त कक्षाकोठाको चार भित्ता र सिलिङ्गमा प्रति वर्गफिटको रु.40 का दरले रङ लगाउन कति खर्च लाग्छ ? पत्ता लगाउनुहोस् ।
How much does it cost to paint four walls and ceiling of the classroom excluding doors and windows at the rate of Rs. 40 per square feet? Find it.

(b) यदि एक जना पेन्टरले एक दिनमा जम्मा 202 वर्गफिटमा रङ लगाउँछ भने उक्त कक्षाकोठामा दुई जना पेन्टरलाई रङ लगाउन जम्मा कति दिन लाग्छ ? पत्ता लगाउनुहोस् ।
If a painter paints 202 square feet in a day, how many days will two painters take to paint the classroom? Find it.

[3 + 1]
Asked on 2081 Exam
41.

चित्रमा, अर्धगोला र सोली मिलेर बनेको धातुको एउटा ठोस बस्तु दिइएको छ, जहाँ सोलीको उचाइ 24 से.मि. र आधारको व्यास 14 से.मि. छ ।
In the figure, a metallic solid made of hemisphere and cone is given, where the height of cone is 24 cm and diameter of base is 14 cm.

[Figure: Metallic solid made of hemisphere and cone: cone height 24cm, base diameter 14cm]

(a) सोलीको उचाइ र आधारको अर्धव्यास दिइएको अवस्थामा छड्के उचाइ पत्ता लगाउने सूत्र लेख्नुहोस् ।
Write the formula to find the slant height of cone when vertical height and radius of base are given.

(b) उक्त ठोस बस्तुको आयतन पत्ता लगाउनुहोस् ।
Find the volume of the solid object.

(c) उक्त ठोस बस्तुलाई पगालेर 7 से.मि. अर्धव्यास भएको बेलनाकार बस्तुमा परिणत गरियो भने उक्त बेलनाको उचाइ कति हुन्छ ? गणना गर्नुहोस् ।
If the solid object is melted and turned into a cylindrical object of radius 7 cm, what is the height of cylinder? Calculate it.

[1 + 2 + 2]
Asked on 2081 Exam
42.

एउटा वर्गाकार आधार भएको कोठाको आयतन र उचाइ क्रमशः 75 घनमिटर र 3 मिटर छन् । उक्त कोठामा एउटा ढोका र दुईओटा भ्यालहरूले ओगटेको क्षेत्रफल 6 वर्गमिटर छ ।
The volume and height of a square based room are 75 cubic meter and 3 meter respectively. The area occupied by a door and two windows in the room is 6 square meter.

(a) प्रति वर्गमिटर रु.200 का दरले भ्याल, ढोका बाहेक चार भित्तामा प्लास्टर गर्दा जम्मा कति खर्च लाग्छ ? पत्ता लगाउनुहोस् ।
What is the total cost of plastering the four walls without door and windows at the rate of Rs.200 per square meter? Find it.

(b) यदि प्रतिवर्गमिटर प्लास्टर गर्ने दर एक चौथाइले वढ्यो भने भित्ताहरूमा प्लास्टर गर्न जम्मा खर्च कतिले वृद्धि हुन्छ ? पत्ता लगाउनुहोस् ।
If the rate of plastering per square meter is increased by one-forth, then what will be the increment in the total cost of plastering the walls? Find it.

(c) सो कोठाको भुँइमा 2 मिटर चौडाइ भएको कार्पेट विछ्याउन कति लम्बाइ भएको कार्पेट बजारबाट किनेर ल्याउनुपर्लाँ ? पत्ता लगाउनुहोस् ।
What length of carpet having its width 2 meters should be purchased from the market for carpeting the room? Find it.

[3 + 1 + 1]
Asked on 2080 Exam
44.

एउटा वेलनाकार काठको मुढालाई यसको अर्धव्याससँग बराबर हुनेगरी माथिल्लो भागबाट सोली आकारमा खोपेर त्यसमा मैन भरिएको छ । दिइएको चित्रमा मुढाका विभिन्न भागका नापहरू अङ्कन गरिएको छ ।

A cylindrical wooden log is drilled out in its upper part in a conical shape with equal radius of the cylinder and then it is filled with wax. Measurements of different parts of the log are labeled as in the given figure.

[Figure: Cylindrical log with conical portion drilled out, cylinder height 50cm, diameter 28cm, slant edge 7cm]

a) सोलीको ठाडो उचाई पत्ता लगाउनुहोस् ।
Find the vertical height of the cone.

b) सोली आकार बाहेक काठको मुढामा रङ लगाउन प्रति वर्ग से.मि. 50 पैसाका दरले जम्मा कति खर्च लाग्छ ? गणना गर्नुहोस् ।
What is the total cost of painting the wooden log except conical part at the rate of 50 paisa per sq. cm? Calculate it.

c) के उक्त सोली आकारको भागको आयतन वेलनाकार वस्तुको आयतनको एक तिहाई हुन्छ ? कारण दिनुहोस् ।
Is the volume of the conical portion one third of the volume of the cylindrical object? Give reason.

[1 + 3 + 1]
Asked on 2080 Exam
46.

पर्यटकहरूको एउटा समूहले सगरमाथा आधार शिविरमा चित्रमा देखाएजस्तै पिरामिड आकारको पाल बनाउने योजना बनाएको थियो । यसको आधार भुजाको लम्बाइ 12 फिट र त्रिभुजाकार सतहहरूको क्षेत्रफल 240 वर्ग फिट छन् ।

A group of tourists planned to fix a pyramid shaped tent at the Everest Base Camp as shown in the figure. Length of a side of its base is 12 ft and area of triangular surfaces is 240 sq. ft.

[Figure: Pyramid shaped tent with square base, base side 12 ft]

a) वर्गाकार आधार भएको पिरामिडको त्रिभुजाकार सतहहरूको क्षेत्रफल निकाल्ने सूत्र लेख्नुहोस् ।

Write the formula to find the area of triangular surfaces of a square based pyramid.

b) उक्त पालको छड्के उचाई पत्ता लगाउनुहोस् ।

Find the slant height of the tent.

c) उक्त पालभित्र एकजना पर्यटककको लागि 64 घन फिट हावा आवश्यक पर्छ भने कतिजना पर्यटकहरू सहज तरिकाले वस्न सक्छन् ? पत्ता लगाउनुहोस् ।

If 64 cu. ft. of air is required for a tourist, how many tourists can be accommodated easily in the tent? Find it.

[1 + 1 + 2]
Asked on 2080 Exam
47.

चित्रमा सोली आकारको वस्तुको छड्के सतहको उचाइ 25 से.मि. र अर्धगोलाकार वस्तुको अर्धव्यास 7 से.मि. भएका दुई वस्तुहरू मिलाई एउटा ठोस वस्तु बनाइएको छ ।

In the figure, a conical object with slant height 25 cm and a hemispherical object with radius 7 cm is composed to make a solid object.

[Figure: Cone with slant height 25 cm joined with hemisphere of radius 7 cm to form a solid object]

a) दिइएको चित्रमा सोलीको ठाडो उचाइ खिच्दा बन्ने त्रिभुज कस्तो प्रकारको बन्छ ? लेख्नुहोस् ।

What type of triangle is formed when the vertical height of the cone is drawn in the given figure? Write it.

b) उक्त ठोस वस्तुमा प्रति वर्ग सेन्टिमिटर 25 पैसाका दरले रङ लगाउन कति खर्च लाग्ला ? पत्ता लगाउनुहोस् ।

What will be the total cost to paint the solid at the rate of 25 paisa per square centimeter? Find it.

c) उक्त ठोस वस्तुको आयतन कति हुन्छ ? पत्ता लगाउनुहोस् ।

What is the volume of the solid object? Find it.

[1 + 2 + 3]
Asked on 2080 Exam
49.

एउटा वर्गाकार आधार भएको पिरामिडको आधार भुजाको लम्बाई 10 मिटर र उचाइ 12 मिटर छ ।

A square based pyramid has its length of a side of base 10 meter and height 12 meter.

a) वर्गाकार आधार भएको पिरामिडको त्रिभुजाकार सतहहरूको क्षेत्रफल निकाल्ने सूत्र लेख्नुहोस् ।

Write the formula for finding the area of triangular surfaces of the pyramid.

b) उक्त पिरामिडको आयतन पत्ता लगाउनुहोस् ।

Find the volume of the pyramid.

c) उक्त पिरामिडको पूरा सतहमा प्रतिवर्ग मिटर रु. 50 का दरले रङ लगाउन कति खर्च लाग्छ ? पत्ता लगाउनुहोस् ।

What will be the total cost of painting the total surface of the pyramid at the rate of Rs. 50 per square meter? Find it.

d) उक्त पिरामिडको आधारको क्षेत्रफल एउटा त्रिभुजाकार सतहको क्षेत्रफलभन्दा कतिले कम वा बढी हुन्छ ? तुलना गर्नुहोस् ।

By how much the area of the base of the pyramid is less or more than the area of a triangular surface? Compare it.

[1 + 1 + 2 + 2]
Asked on 2080 Exam
54.

एउटा कोठाको लम्बाइ, चौडाइ र उचाइ क्रमश 7 मिटर, 6 मिटर र 4 मिटर छ । उक्त कोठामा प्रत्येकको \((1.5 \times 1)\) वर्गमिटर क्षेत्रफल भाएका दुईथाता झ्यालहरू र एउटा 1.5 वर्गमिटर क्षेत्रफल भाएको ढोका छन् ।

The length, breadth and height of a room are 7 meter, 6 meter and 4 meter respectively. In that room there are two windows having area \((1.5 \times 1)\) square meter each and a door with area 1.5 square meter.

a) झ्यानलढोका बाहेक उक्त कोठाको चारैभित्तामा प्रति वर्ग मिटर रु. 50 का दरमा प्लाष्टर गर्दा कति खर्च लाग्छ ? पत्ता लगाउनुहोस् ।
How much will it cost to plaster on the four walls of the room excluding windows and door at the rate of Rs. 50 per square meter? Find it.

b) उक्त कोठाको भुईमा कार्पेट विछ्याउनुदा रु. 900 खर्च लागेछ । प्रति वर्ग मिटर कार्पेट विछ्याउन ज्याला रु. 25 तोक्दा उपयुक्त हुन्छ ? कारण दिनुहोस् ।
When carpet is laid on the floor of the room, Rs. 900 has been spent. Does the wage of Rs. 25 per square meter of the carpet is suitable? Give reason.

[2 + 2]
Asked on 2080 Exam
55.

एउटा वृत्ताकार मैदानको केन्द्रमा गाडिएको खम्बाको जमिनमाथिको उचाइ 14 फिट र मैदानको परिधि 88 फिट छ । मैदानको परिधिको दुई विपरीत बिन्दुबाट खम्बाको टुप्पोसम्म दुईओटा डोरीले तन्किने गरी बाँधिएको छ ।

A pole of height 14 ft above the ground level is fixed at the center of a circular ground and circumference of the ground is 88 ft. Two ropes are tied at the top of the pole with two points of the circumference from the opposite direction.

a) तलबाट माथि कुनै वस्तु हेर्दा दृष्टिरेखाले क्षितिजसँग वनाउने कोणलाई के भनिन्छ ? लेख्नुहोस् ।
What is the angle called made by the line of sight with the horizon when an object of the upper level is observed from the lower level? Write it.

b) उक्त मैदानको अर्धव्यास पत्ता लगाउनुहोस् ।
Find the radius of the ground.

c) डोरीले जमिनको सतहसँग वनाउने कोण पत्ता लगाउनुहोस् ।
Find the angle formed by the rope with the ground.

d) उक्त डोरीलाई राम्रोसँग गाठो पारी तन्काउन प्रत्येकलाई थप 5 फिट आवश्यक पर्छ । के 45 फिट लामो डोरीले प्रयाप्त हुन्छ ? तर्क दिनुहोस् ।
Additional 5 ft for each rope is required to tight it with proper knot. Is a rope of 45 feet length sufficient? Give logic.

[1 + 1 + 1 + 1]
Asked on 2080 Exam
57.

चित्रमा देखाइएको ठोस वस्तु वर्ग आधार भएको पडमुखा र पिरामिड मिली बनेको छ । जहाँ, आधार भुजाको लम्बाई 12 से.मि., पडमुखाको उचाई 9 से.मि र पिरामिडको छड्के उचाई 10 से.मि छ ।

The solid object shown in the picture is made up of cuboid and pyramid with a square base. Where, the length of the base side is 12 cm, height of the cuboid is 9 cm and slant height of the pyramid is 10 cm.

[Figure: Solid object made of cuboid and square-based pyramid, base side 12 cm, cuboid height 9 cm, slant height 10 cm]

a) वर्ग आधार भएको पिरामिडको छड्के उचाई र आधार भुजा दिइएको अवस्थामा ठाडो उचाई कसरी पत्ता लगाइन्छ ? लेख्नुहोस् ।

How do you find the vertical height of the square based pyramid when slant height and length of the base are given? Write it.

b) उक्त पिरामिडको आयतन पत्ता लगाउनुहोस् । Find the volume of the pyramid.

c) उक्त पिरामिडको आयतन पडमुखाको आयतनभन्दा कतिले कम वा बढी छ ? तुलना गर्नुहोस् ।

How much is the volume of the pyramid less or more than the volume of the cuboid? Compare it.

[1 + 1 + 1]
Asked on 2080 Exam
58.

चित्रमा देखाइएजस्तै एउटा इनार बनाउन 91 से.मि.भित्री व्यास तथा 30 से.मि उचाइ भएका 30 ओटा सिमेन्टबाट बनेका चक्काहरू राखिएका छन् । उक्त इनार बनाउन 3 जना कामदारहरूलाई 7 दिन लाग्छ । एउटा चक्काको मूल्य रु. 900 र प्रति कामदारको दैनिक ज्याला रु. 1500 छ ।

As shown in the picture, 30 rings made of cement with internal diameter of 91 cm and height of 30 cm each are placed to make a well. 3 workers can build the well in 7 days. The cost of one ring is Rs. 900 and the daily wage per worker is Rs. 1500.

[Figure: A cylindrical well made of 30 cement rings, internal diameter 91 cm, height 30 cm each]

a) इनार बनाउन जम्मा कति खर्च लाग्छ ? पत्ता लगाउनुहोस् ।

How much does it cost to build a well? Find it.

b) उक्त इनारमा अधिकतम कति लिटर पानी अटाउँछ? पत्ता लगाउनुहोस् ।

How many maximum liters of water can be stored in the well? Find it.

c) यदि उक्त इनारमा 4000 लिटर पानी रहेछ भने कति ओटा पूर्ण चक्का पानीमुनि छन् ? पत्ता लगाउनुहोस् ।

If there is 4000 liter of water in that well, how many rings are completely under the water level? Find it.

[2 + 2 + 2]

Asked on 2082 Exam
3.

एउटा पसलले तीन दिनमा बिक्री गरेका जुत्ताहरू तल तालिकामा दिइएको छ । प्रत्येक दिन अघिल्लो दिनभन्दा दोब्बर सङ्ख्यामा जुत्ताहरू बिक्री गरिएको छ ।

The number of shoes sold by a shop in the first three days are given below in the table. The shop is selling double number of shoes each day compared to the previous day.

दिनहरू (Days) पहिलो (1st) दोस्रो (2nd) तेस्रो (3rd)
जोर जुत्ताहरू / Pair of shoes 4 8 16

(a) पहिलो पद \((a)\) र अन्तिम पद \((b)\) विचका गुणोत्तर मध्यमाहरूको सङ्ख्या \((n)\) छ भने समान अनुपात \((r)\) निकाल्ने सूत्र लेख्नुहोस् ।

The number of geometric means between the first term \((a)\) and last term \((b)\) is \((n)\), write the formula to find common ratio \((r)\).

(b) माथि दिइएको तालिकाअनुसार 8 दिनसम्म कति जोर जुत्ताहरू बिक्री हुन्छन् ? सूत्र प्रयोग गरी निकाल्नुहोस् ।

How many pair of shoes will be sold up to 8 days as given in the above table? Calculate it by using formula.

(c) पसलले 4092 जोर जुत्ताहरू कति दिनमा बिक्री गर्दछ ? पत्ता लगाउनुहोस् ।

In how many days the shop sells 4092 pair of shoes? Find it.

[1 + 2 + 2]
Asked on 2082 Exam
4.

रमिलाले आफ्नो छोरीको नाममा खाता खोलेर कुनै सहकारीमा मासिक रूपमा समान अन्तरमा वढाउने गरी जम्मा गरेको रकमलाई निम्नानुसार तालिकामा प्रस्तुत गरिएको छ :

Ramila opened account on behalf of her daughter in a finance and the amounts deposited monthly is increased in common difference are presented below in the table.

महिना (Months) 1st 2nd 3rd 4th 5th
रकम रु. (Amount Rs.) 2000 4000 6000 8000 10000

(a) रमिलाले छोरीका लागि बचत गरिदिएको रकमवाट कस्तो प्रकारको अनुक्रम बनेको छ, लेख्नुहोस् ।

What type of sequence is formed on saving for daughter of Ramila? Write it.

(b) रमिलाले 1 वर्षमा जम्मा कति रकम जम्मा गरेकी रहेछिन् ? पत्ता लगाउनुहोस् ।

How much total amount did Ramila deposit in 1 year? Find it.

(c) छोरीको खातामा जम्मा रु.4,20,000 बचत गर्न रमिलालाई कति महिना लाग्छ ? पत्ता लगाउनुहोस् ।

How many months will Ramila require to deposit Rs.4,20,000 in the account of her daughter? Find it.

[1 + 2 + 2]
Asked on 2082 Exam
6.

एक जना शिक्षकले आफुले पढाएको पाठ भिडियो बनाएर सामाजिक सञ्जालमा राख्नु भयो । उक्त भिडियो हेर्ने नयाँ विद्यार्थीहरूको सङ्ख्या तल तालिकामा दिइएअनुसार समान अनुपानमा बढेको पाइयो ।

A teacher made a video of a lesson which he/she taught and uploaded in a social media. Daily viewers of this video are increased by the same ratio as per the table given below.

दिन (Days) 1 2 3 4 5 ......
नयाँ विद्यार्थीहरू / New Students 100 200 400 800 1600 ......

(a) नयाँ विद्यार्थीहरू हरेक दिन कुन अनुक्रममा बढिरहेका छन्, लेख्नुहोस् ।

In which sequence new students are being increased every day? Write it.

(b) 10 औँ दिनसम्ममा जम्मा कति नयाँ विद्यार्थीहरूले उक्त भिडियो हेर्छन् ? पत्ता लगाउनुहोस् ।

How many total new students will view the video till 10th day? Find it.

(c) तेस्रो दिनसम्म र अर्को कुनै दिनसम्मको भिडियो हेर्ने नयाँ विद्यार्थीहरूको अनुपात 7:255 छ भने उक्त अर्को दिन कति औँ दिन रहेछ ? पत्ता लगाउनुहोस् ।

The ratio of students who viewed the video up to the 3rd day and up to other any day is 7:255, which day is that day? Find it.

[1 + 2 + 2]
Asked on 2081 Exam
11.

रमेशले प्रत्येक दिन अघिल्लो दिनको भन्दा दोब्बर रकम जम्मा गर्ने गरी 7 दिनसम्म एउटा सहकारीमा रकम बचत गर्छन् । जसअनुसार उनले पहिलो दिन रु. 10, दोस्रो दिन रु. 20, तेस्रो दिन रु. 40 गरी 7 औँ दिनसम्म यसरी नै रकम जम्मा गरेछन् ।

Ramesh deposits the amount in a co-operative for 7 days by increasing the amount every day double than the previous day. He deposited Rs. 10 on the first day, Rs. 20 on the second day, Rs. 40 on the third day and so on till the 7th day.

(a) माथिको सन्दर्भ अनुसार जम्मा गरेको रकमबाट बन्ने श्रेणी कुन प्रकारको हुन्छ ? लेख्नुहोस् ।

What type of series is formed from the deposit amount according to above context? Write it.

(b) 7 दिनको अन्त्यसम्ममा रमेशले कति रकम जम्मा गर्छन् ? सूत्र प्रयोग गरी पत्ता लगाउनुहोस् ।

How much amount will Ramesh deposit by the end of 7 days? Find it using formula.

(c) यदि रमेशले 4 दिनसम्म जम्मा भएको रकम पहिले नै निकालेको भए 7 दिनको अन्त्यमा उसले कति रकम मात्र पाउँछन् ? पत्ता लगाउनुहोस् ।

If Ramesh withdraws the amount deposited by 4 days, how much will he receive at the end of the 7th days? Find it.

[1 + 2 + 2]
Asked on 2081 Exam
13.

हरिले आफ्नो छोरा आशिषको पहिलो जन्मदिनमा रु.1,000, दोस्रो जन्मदिनमा रु.2,000, तेस्रो जन्मदिनमा रु.3,000 का दरले एउटा वैङ्कमा रकम जम्मा गरेछन् । यसरी हरेक जन्मदिनमा रु.1,000 का दरले वढाउँदै लगेछन् ।

Hari deposited Rs.1,000, Rs.2,000, Rs.3,000 in bank on his son Aashish's first, second and third birthday respectively. In this way, he increases the deposit by Rs. 1,000 on every birthday.

(a) समानान्तरीय श्रेणीमा मध्यमालाई परिभाषित गर्नुहोस् ।

Define mean in arithmetic series.

(b) दशौँ जन्मदिनसम्ममा कति रकम जम्मा हुन्छ ? पत्ता लगाउनुहोस् ।

How much total money is deposited upto 10th birthday? Find it.

(c) के एघारौँ जन्मदिनसम्ममा आशिषको खातामा रु.66,000 जम्मा हुन्छ ? कारण दिनुहोस् ।

Is Rs.66,000 deposited on Aashish account by 11th birthday? Give reasons.

(d) आशिषको खातामा कति वर्षसम्ममा रु.1,05,000 जम्मा होला ? पत्ता लगाउनुहोस् ।

In how many years, will Rs.1,05,000 be deposited in the account of Aashish? Find it.

[1 + 2 + 1 + 2]
Asked on 2080 Exam
16.

एउटा विद्यार्थीले साभा पुस्तक भण्डारवाट एउटा नेपाली शब्दकोष किने । उनले हरेक दिन समानान्तरीय अनुक्रममा नयाँ शब्दहरू सिक्ने निधो गरे । पहिलो दिन उनले 20 ओटा नयाँ शब्द र पाँचौ दिन 40 ओटा नयाँ शब्दहरू सिके ।

A student bought a Nepali dictionary from the Sajha Pustak Bhandar. He decided to learn new words in arithmetic sequence every day. On the first day he learned 20 new words and on the fifth day 40 new words.

a) पाँचओटा मध्यमा भएको समानान्तरीय अनुक्रममा जम्मा कतिओटा पदहरू हुन्छन् ।

How many terms are there in an arithmetic sequence having five means?

b) हरेक पछिल्लो दिन उनले अघिल्लो दिनभन्दा कति बढी शब्द सिकेका रहेछन् ? पत्ता लगाउनुहोस् ।

How many new words did he learn in the succeeding day? Find it.

c) दशौ दिनसम्म उनले जम्मा कतिओटा नयाँ शब्दहरू सिक्नेछन् ? पत्ता लगाउनुहोस् ।

How many new words will he learn till tenth day? Find it.

[1 + 2 + 2]
Asked on 2080 Exam
17.

एउटा ईंटा कारखानामा काम गर्ने कामदारहरूले हरेक दिन घाममा पङ्क्तिमा रहनेगरी ईंटा बिछ्याउंछन् । उनीहरूले पहिलो दिन पहिलो पङ्क्तिमा 300 ओटा ईंटा, दोस्रो दिन दोस्रो पङ्क्तिमा 320 ओटा ईंटा, तेस्रो दिन तेस्रो पङ्क्तिमा 340 ओटा ईंटा गरी एवम्रीतले हरेक दिन समान अन्तरमा बढाउँदै लगेछन् ।

The workers in a brick factory laid down bricks in rows every day in the sun. They laid 300 bricks in the first row in the first day, 320 bricks in the second row in the second day, 340 bricks in the third row in the third day and so on increasing in equal number.

a) उनीहरूले ईंटाहरू कुन अनुक्रममा बिछ्याएछन् ? लेख्नुहोस् ।

In which sequence did they lay down the bricks? Write it.

b) उनीहरूले 15 दिन भित्र जम्मा कतिवटा ईंटा बिछ्याउँछन् ? पत्ता लगाउनुहोस् ।

How many total bricks will they lay down within 15 days? Find it.

c) पाँचौं पङ्क्तिसम्म र दोस्रो पङ्क्तिसम्म राखिएका ईंटाहरूको संख्या तुलना गर्नुहोस् ।

Compare the number of bricks laid down till the fifth rows and till the second rows.

[1 + 2 + 2]
Asked on 2080 Exam
18.

अरुण उपत्यका क्षेत्रमा 650 भन्दा वढी प्रजानीका चराहरू पाइन्छन् । मानौ यीमध्ये कनै 10 प्रजानीका चराहरूको जम्मा सङ्ख्या 2,04,600 रहेछ । जहाँ एकभन्दा अर्को प्रजातीका चराहरूको सङ्ख्या दोव्वर छन् ।

More than 650 species of birds are found in Arun Valley. Let among them, the total number of birds of 10 species is 2,04,600 where one species is double of the former species.

a) माथिको सन्दर्भ कुन अनुक्रममा उल्लेख गरिएको छ ? लेख्नुहोस् ।
To which sequence of the given context is related with? Write it.

b) सवैभन्दा कम पहिलो प्रजानीका चराहरूको सङ्ख्या पत्ता लगाउनुहोस् ।
Find the number of birds of minimum first species.

c) चौथो प्रजातीका चराहरूको सङ्ख्या दोस्रो प्रजातीका चराहरूका सङ्ख्याको कति गुणा हुन्छ ? गणना गर्नुहोस् ।
How many times is the number of fourth species of the birds than that of second species? Calculate it.

[1 + 2 + 2]
Asked on 2080 Exam
19.

एक कर्मचारीले आफ्नो तलबको निश्चित रकम एउटा सहकारीमा समानान्तरीय अनुक्रममा जम्मा गर्ने निर्णय गरे । सोहीवमोजिम पहिलो महिना रु. 6000, दोस्रो महिना रु. 6100, तेस्रो महिना रु. 6200 गरी एवम्रीतले रकम जम्मा गरेछन् ।

A civil servant decided to deposit certain amount of his salary in a cooperative in the arithmetic sequence. He deposited Rs 6000 in the first month, Rs 6100 in the second month, Rs 6200 in the third month and so on.

a) समानान्तरीय अनुक्रममा रहेका पदहरूको योगफल पत्ता लगाउने सूत्र लेख्नुहोस् ।

Write the formula to find the sum of the terms of an arithmetic sequence.

b) उनले एक वर्षभित्र जम्मा कति रकम सहकारीमा बचत पार्छन् ? पत्ता लगाउनुहोस् ।

How much amount does he save within a year in the cooperative? Find it.

c) उनलाई रु. 64,500 जम्मा गर्न कति महिना लाग्छ ? गणना गर्नुहोस् ।

How many months will he take to deposit Rs 64,500? Calculate it.

[1 + 2 + 3]

Asked on 2082 Exam
4.

केन्द्रविन्दु O भएको वृत्तमा एउटै चाप SP मा आधारित केन्द्रीय कोण SOP र परिधि कोणहरू SRP र STP रहेका छन् ।

In a circle with centre O, the central angle SOP and inscribe angles SRP and STP are standing on same arc SP.

(a) एउटै चापमा आधारित केन्द्रीय कोण र परिधि कोणविचको सम्बन्ध लेख्नुहोस् ।

Write the relationship between central angle and inscribe angle standing on the same arc.

(b) केन्द्रीय कोणको नाप \((x + 60)^\circ\) र परिधि कोणको नाप \((2x)^\circ\) भए \(x\) को मान पत्ता लगाउनुहोस् ।

The measurement of the central angle is \((x + 60)^\circ\) and the measurement of the inscribe angle is \((2x)^\circ\). Find the value of \(x\).

(c) परिधि कोणहरू STP र SRP बराबर हुन्छन् भनी प्रयोगात्मक रूपमा पुष्टि गर्नुहोस् । (कमतीमा 3 से.मी. अर्धव्यास भएका दुईओटा वृत्तहरू आवश्यक छन् ।)

Verify experimentally that the inscribed angles STP and SRP are equal. (Two different circles with radii of at least 3 cm are required.)

[1 + 1 + 2]
Asked on 2082 Exam
5.

दिइएको चित्रमा O वृत्तको केन्द्रबिन्दु हो । जहाँ \(\angle PSR = x^\circ\) र \(\angle PQR = 2x^\circ\) दिइएका छन् ।

In the given figure, O is the centre of the circle. Where \(\angle PSR = x^\circ\) and \(\angle PQR = 2x^\circ\) are given.

[Figure: Circle with centre O and cyclic quadrilateral PQRS; angle PSR = x degrees and angle PQR = 2x degrees]

(a) चक्रीय चतुर्भुजको सम्मुख कोणहरूबिचको सम्बन्ध लेख्नुहोस् ।

Write the relation between the opposite angles of a cyclic quadrilateral.

(b) दिइएको चित्रबाट \(x\) को मान निकाल्नुहोस् ।

Find the value of \(x\) from the given figure.

(c) केन्द्रीय कोण POR, परिधि कोण PSR को दुईगुणा हुन्छ भनी प्रयोगात्मक परीक्षण गर्नुहोस् । (कम्तीमा 3 से.मि. अर्धव्यास भएका दुईओटा वृत्तहरू आवश्यक छन् ।)

Verify experimentally that the central angle POR is twice the circumference angle PSR. (Two circles with at least 3 cm radii are necessary.)

(d) प्रमाणित गर्नुहोस् (Prove that): \(\angle QPO + \angle QRO = 120^\circ\)

[1 + 1 + 2 + 2]
Asked on 2082 Exam
7.

दिइएको चित्रमा O वृत्तको केन्द्रबिन्दु हो । जहाँ \(\angle WXY = x^\circ\) र \(\angle WZY = 3x^\circ\) दिइएको छन् ।

In the given figure, O is the centre of the circle. Where \(\angle WXY = x^\circ\) and \(\angle WZY = 3x^\circ\) are given.

[Figure: Circle with centre O and cyclic quadrilateral WXYZ; angle WXY = x degrees, angle WZY = 3x degrees]

(a) चक्रीय चतुर्भुजको सम्मुख कोणहरूको योगफल कति हुन्छ ? लेख्नुहोस् ।

What is the sum of the opposite angles of a cyclic quadrilateral? Write it.

(b) दिइएको चित्रबाट x को मान पत्ता लगाउनुहोस् ।

Find the value of x from the given figure.

(c) केन्द्रीय कोण WOY को आधा परिधी कोण WXY हुन्छ भनी प्रयोगात्मक रूपमा परीक्षण गर्नुहोस् । (कम्तीमा 3 से.मी. अर्धव्यास भएका दुईओटा वृत्तहरू आवश्यक छन् ।)

Verify experimentally that the circumference angle WXY is half of the central angle WOY. (Two circles having at least 3 cm radii are necessary.)

(d) प्रमाणित गर्नुहोस् । \(\angle OWZ + \angle OYZ = 135^\circ\)

Prove that: \(\angle OWZ + \angle OYZ = 135^\circ\)

[1 + 1 + 2 + 2]
Asked on 2081 Exam
10.

चित्रमा, वृत्तको केन्द्रविन्दु O र ABDC एउटा चक्रीय चतुर्भुज हो ।

In the figure, O is the center of the circle and ABDC is a cyclic quadrilateral.

[Figure: Circle with center O and cyclic quadrilateral ABDC inscribed, points B and D on circle]

(a) वृत्तको एउटै चापमा उभिएका परिधि कोणहरू विचको सम्बन्ध के हुन्छ ? लेख्नुहोस् ।

What is the relation between inscribed angles standing on same arc of a circle? Write it.

(b) यदि परिधिकोण \(BAC = 35^\circ\) छ भने \(\angle BOC\) को मान पत्ता लगाउनुहोस् ।

If inscribed angle \(BAC = 35^\circ\), find the value of \(\angle BOC\).

(c) यदि चाप BDC र चाप ACD बराबर छन् भने प्रमाणित गर्नुहोस् : \(AB \parallel CD\).

If arc BDC and arc ACD are equal, prove that: \(AB \parallel CD\)

(d) \(\angle BAC\) र \(\angle BDC\) कोणहरू परिपूरक हुन्छन् भनी प्रयोगद्वारा सिद्ध गर्नुहोस् ।

(कम्तीमा 3 से.मि. अर्धव्यास भएका दुई वृत्तहरू आवश्यक छन् ।)

Verify experimentally that \(\angle BAC\) and \(\angle BDC\) are supplementary.

(Two circles having at least 3 cm radii are necessary.)

[1 + 1 + 2 + 2]
Asked on 2081 Exam
11.

दिइएको वृत्तको केन्द्रविन्दु O छ । परिधिका कोणहरू PAQ र PBQ एउटै चाप PQ मा आधारित छन् ।

O is the centre of the given circle. Inscribed angles PAQ and PBQ are standing on the same arc PQ.

[Figure: Circle with centre O, inscribed angles PAQ and PBQ on same arc PQ]

(a) परिधि कोणहरू PAQ र PBQ बिचको सम्बन्ध लेख्नुहोस् ।

Write the relation between the circumference angles PAQ and PBQ.

(b) यदि केन्द्रीय कोण POQ को नाप \((12x + 4)^\circ\) र परिधि कोण PAQ को नाप \((3x + 20)^\circ\) छन् भने \(x\) को मान निकाल्नुहोस् ।

If the measures of central angle POQ is \((12x + 4)^\circ\) and the measures of inscribed angle PAQ is \((3x + 20)^\circ\), find the value of \(x\).

(c) एउटै चापमा बनेको केन्द्रीय कोण परिधि कोणको दोब्बर हुन्छ भनी प्रयोगद्वारा सिद्ध गर्नुहोस् । (अर्धव्यास 3 से.मि. भन्दा बढी भएका दुईओटा वृत्तहरू आवश्यक छन् ।)

Verify experimentally that central angle is double of the inscribed angle formed on same arc. (Two circles having radii more than 3 cm are necessary.)

[1 + 1 + 2]
Asked on 2081 Exam
14.

केन्द्रबिन्दु O भएको वृत्तमा केन्द्रीय कोण AOB र परिधिका कोणहरू ADB र ACB एउटै चाप AB मा आधारित छन् ।
Central angle AOB and inscribed angles ADB and ACB are standing on the same arc AB in a circle with center O.

(a) एउटै चापमा आधारित परिधिका कोणहरू बिचको सम्बन्ध लेख्नुहोस् ।
Write the relation between the inscribed angles standing on the same arc.

(b) केन्द्रीय कोण AOB, परिधिको कोण ACB को दोब्बर हुन्छ भनी प्रयोगात्मक रूपबाट पुष्टि गर्नुहोस् । (कम्तीमा 3 cm अर्धव्यास भएका दुईओटा वृत्तहरू आवश्यक छन् ।)
Experimentally verify that, the central angle AOB is double of the inscribed angle ACB. (Two circles with radii at least 3 cm are necessary.)

(c) वृत्तको एउटै चापमा आधारित केन्द्रीय कोणको नाप \((5x)^\circ\) र परिधि कोणको नाप \((2x + 10)^\circ\) भए x को मान पत्ता लगाउनुहोस् ।
The measure of central angle is \((5x)^\circ\) and the measure of inscribed angle is \((2x + 10)^\circ\) standing on the same arc in a circle, find the value of x.

[1 + 2 + 1]
Asked on 2080 Exam
17.

चित्रमा दुईओटा वृत्तहरू, बिन्दुहरू P र Q मा प्रतिच्छेदित भएका छन् । बिन्दु Q बाट जाने दुईओटा रेखाहरू AB र CD छन् ।

In the figure, two circles are intersected at the points P and Q. Two lines AB and CD pass through the point Q.

[Figure: Two intersecting circles at points P and Q with lines AB and CD passing through Q]

a) एउटै चापमा रहेर बनेका परिधि कोणहरूबिचको सम्बन्ध के हुन्छ ? लेख्नुहोस् ।

What is the relation between the inscribed angles made by the same arc? Write it.

b) यदि \(\angle QAP = 25°\) र \(\angle QCP = (2x - 15)°\) भए \(x\) को मान पत्ता लगाउनुहोस् ।

If \(\angle QAP = 25^\circ\) and \(\angle QCP = (2x - 15)^\circ\), find the value of \(x\).

c) प्रमाणित गर्नुहोस् (Prove that): \(\angle CPA = \angle BPD\)

d) कम्तिमा 3 से.मि. अर्धव्यास भएका दुईवटा वृत्तहरू बनाई एउटै चापमा आधारित केन्द्रिय कोण परिधि कोणको दोव्बर हुन्छ भनी प्रयोगात्मक विधिबाट परीक्षण गर्नुहोस् ।

Verify experimentally that the central angle is double of the inscribed angle standing on the same arc by making two circles having at least 3 cm radii.

[1 + 1 + 2 + 2]

Asked on 2082 Exam
5.

त्रिभुज QRT र समानान्तर चतुर्भुज PQRS एउटै आधार QR र उही समानान्तर रेखाहरू QR र PT विच बनेका छन् ।

Triangle QRT and Parallelogram PQRS are formed on the same base QR and between the same parallel lines QR and PT.

(a) समानान्तर चतुर्भुज PQRS को क्षेत्रफल र त्रिभुज QRT को क्षेत्रफल विचको सम्बन्ध लेख्नुहोस् ।

Write the relationship between the area of parallelogram PQRS and area of triangle QRT.

(b) त्रिभुज QRT मा भुजा QT को लम्बाइ 16 से.मी. र भुजा QT मा शीर्ष विन्दु R बाट खिचिएको लम्बको लम्बाइ 6 से.मी. छन् भने समानान्तर चतुर्भुज PQRS को क्षेत्रफल पत्ता लगाउनुहोस् ।

In the triangle QRT, the length of a side QT is 16 cm. and the length of perpendicular drawn from the vertex R to the side QT is 6 cm. Find the area of parallelogram PQRS.

(c) त्रिभुज QTU को आधार समानान्तर चतुर्भुज PQRS को आधारभन्दा दोब्बर भएको भए त्रिभुज QTU र समानान्तर चतुर्भुज PQRS को क्षेत्रफलविचको सम्बन्ध के हुन्थ्यो ? जहाँ बिन्दुहरू Q, R र U एउटै सरल रेखामा पर्दछन् । तर्क दिई लेख्नुहोस् ।

What would be the relation between the area of triangle QTU and parallelogram PQRS if the base of the triangle QTU was double of the base of the parallelogram PQRS? Where the points Q, R and U lie on the same straight line. Write with logic.

[1 + 2 + 1]
Asked on 2082 Exam
6.

एउटा वृत्ताकार पोखरीको अर्धव्यास 21 मिटर छ । उक्त पोखरीको ठिकविचमा एउटा खम्बा गाडिएको छ । एक जना 1.4 मिटर अग्लो मानिसले पोखरीको किनाराबाट खम्बाको टुप्पोमा हेर्दा \(45^\circ\) को उन्नतांश कोण बनेको छ ।

The radius of a circular pond is 21 meter. A pole is fixed at the center of the pond. A man 1.4 meter tall observed the top of the pole from the edge of the pond and found the angle of elevation to be \(45^\circ\).

(a) उन्नतांश कोणलाई परिभाषित गर्नुहोस् ।

Define the angle of elevation.

(b) माथिको सन्दर्भबाट बन्ने चित्र कोर्नुहोस् ।

Sketch the figure from the above context.

(c) पानीको सतहभन्दा माथिको खम्बाको उचाइ कति रहेछ ? पत्ता लगाउनुहोस् ।

What was the height of the pole above the water level? Find it.

(d) पानीको सतहभन्दा माथिको खम्बाको उचाइ कति कम भएको भए उन्नतांश कोण \(30^\circ\) हुन्थ्यो ? गणना गरी तर्क दिनुहोस् ।

By how much should the height of the pole above the water surface be reduced so that the angle of elevation becomes \(30^\circ\)? Give the logic with calculation.

[1 + 1 + 1 + 1]
Asked on 2082 Exam
8.

एउटा वृत्ताकार पोखरीको व्यास 100 मिटर र यसको बिचमा एउटा खम्बा गाडिएको छ । एउटा व्यक्तिले पोखरीको किनाराबाट खम्बाको टुप्पाको उन्नताश कोण \(\theta\) पाएछ । पोखरीको गहिराइ 1.5 मिटर र खम्बाको जम्मा उचाइ 51.5 मिटर छ ।

The diameter of a circular pond is 100 m and a pillar is fixed at the centre of the pond. A person finds the angle of elevation to the top of the pillar be \(\theta\) from the bank of the pond. The depth of the pond is 1.5 m and total high of the pillar is 51.5 m.

(a) माथिको सन्दर्भ जनाउने चित्र बनाउनुहोस् ।

Draw a figure representing the above context.

(b) पानीको सतहभन्दा माथि रहेको खम्बाको उचाइ कति होला ?

What is the height of the pole above the water level?

(c) उन्नताश कोण \(\theta\) को मान पत्ता लगाउनुहोस् ।

Find the value of angle of elevation \(\theta\).

(d) यदि उन्नताश कोण \(30^\circ\) भएको भए पोखरीको अर्धव्यास कति हुन्थ्यो ? पत्ता लगाउनुहोस् ।

If the angle of elevation was \(30^\circ\), what would be the radius of the pond? Find it.

[1 + 1 + 1 + 1]
Asked on 2082 Exam
14.

संगैको चित्रमा 45 मिटर अग्लो भ्युटावरको (AB) टुप्पाबाट पूर्वपट्टि 15 मिटर पर रहेको एउटा (CD) घरको छतमा हेर्दा 60° को कोण बनेको छ ।

In the figure along side, from the top of the 45 meter high view tower (AB) an angle of 60° is formed when looking at the roof of a house at a distance of 15 meter to the east of the tower.

[Figure: View tower AB=45m, house CD to the east at distance BD=15m, angle of depression 60 degrees from A to roof C]

(a) घरको छतदेखि भ्युटावरको टुप्पामा हेर्दा कति डिग्रीको कोण बन्छ ? लेख्नुहोस् ।

What is the angle formed when observed from the roof of the house to the top of the view tower? Write it.

(b) टावरमा AE भागको उचाइ कति हुन्छ ? पत्ता लगाउनुहोस् ।

What is the height of the part AE of the tower? Find it.

(c) घरको उचाइ कति हुन्छ ? पत्ता लगाउनुहोस् ।

What is the height of the house? Find it.

(d) अवलोकनकर्ताले सो भ्युटावरको टुप्पाबाट कति तल भरेर उक्त घरको छतमा हेर्दा अवनति कोण 45° हुन्छ ? पत्ता लगाउनुहोस् ।

What distance does the observer have to come down from the top of the view tower to observe the roof of the house such that the angle of depression is 45°? Find it.

[1 + 1 + 1 + 1]
Asked on 2081 Exam
16.

चित्रमा टावरको उचाइ (CD) \(15\sqrt{3}\) मिटर र घरको उचाइ (AB) \(10\sqrt{3}\) मिटर छन् । घरको छतवाट टावरको टुप्पोमा हेर्दा \(30^\circ\) को कोण बन्दछ ।

In the figure, the height of tower (CD) is \(15\sqrt{3}\) meter and the height of house (AB) is \(10\sqrt{3}\) meter. The angle from the top of house to the top of tower is \(30^\circ\).

[Figure: Figure showing tower CD of height 15 root 3 m and house AB of height 10 root 3 m with angle of elevation 30 degrees from B to D, with points A, B, C, D, E marked]

(a) घरको छतवाट टावरको टुप्पोमा हेर्दा बन्ने कोण कुन प्रकारको कोण हो ? लेख्नुहोस् ।

What type of angle is formed when the top of the tower is observed from the roof of the house? Write it.

(b) टावरको भाग DE को उचाइ पत्ता लगाउनुहोस् ।

Find the height of part DE of the tower.

(c) घर र टावरविचको दूरी निकाल्नुहोस् ।

Calculate the distance between house and tower.

(d) घरको आधारवाट टावरको टुप्पोमा हेर्दा बन्ने कोण पत्ता लगाउनुहोस् ।

Find the angle of the top of the tower from the basement of the house.

[1 + 1 + 1 + 1]
Asked on 2081 Exam
17.

दिइएको चित्रमा \(EC \parallel AB\), \(DA \parallel CB\) र \(DF \perp BC\) छन् ।

In the given figure, \(EC \parallel AB\), \(DA \parallel CB\) and \(DF \perp BC\).

[Figure: Figure showing EC parallel AB, DA parallel CB, DF perpendicular BC with points E, D, C, F, A, B labeled]

(a) एउटै आधार र उही समानान्तर रेखाहरू बिच रहेका त्रिभुज र समानान्तर चतुर्भुजको क्षेत्रफल बिचको सम्बन्ध लेख्नुहोस् ।

Write the relation between the areas of triangle and parallelogram standing on the same base and between same parallel lines.

(b) यदि \(BC = 6\) से.मि. र \(DF = 8\) से.मि. भए \(\triangle ABE\) को क्षेत्रफल पत्ता लगाउनुहोस् ।

If \(BC = 6\) cm and \(DF = 8\) cm, find the area of \(\triangle ABE\).

(c) दिइएको चित्रमा यदि \(\triangle AOB\) को क्षेत्रफल र \(\triangle COD\) को क्षेत्रफल बराबर छन् भने \(AD \parallel BC\) हुन्छन् भनी प्रमाणित गर्नुहोस् ।

In the given figure, if area of \(\triangle AOB\) and area of \(\triangle COD\) are equal, then prove that \(AD \parallel BC\).

[Figure: Figure with points A, D on top and B, C on bottom, O at intersection of diagonals]

[1 + 2 + 2]
Asked on 2081 Exam
18.

दिइएको चित्रमा, 30 मिटर अग्लो एउटा स्तम्भ (AB) को टुप्पोबाट एउटा घर (CD) को छानाको अवनति कोण (\(\angle HAC\)) \(30^\circ\) छ । स्तम्भ र घरबिचको दूरी \((BD) = 10\sqrt{3}\) मिटर छ ।

In the given figure, from the top of a tower (AB) 30 meter high, the angle of depression (\(\angle HAC\)) of the roof of a house (CD) is \(30^\circ\). The distance between tower and house \((BD) = 10\sqrt{3}\) meter.

[Figure: Tower AB 30m high, house CD, angle of depression HAC = 30 degrees, BD = 10 root 3 m, with points A, H at top, E, C at house roof level, B and D at ground]

(a) उन्नतांश कोणको परिभाषा लेख्नुहोस् ।

Write the definition of the angle of elevation.

(b) घरको छानोबाट स्तम्भको टुप्पोको उन्नतांश कोण कति हुन्छ ? लेख्नुहोस् ।

What is the angle of elevation of the top of the tower from the roof of the house? Write it.

(c) घरको उचाइ पत्ता लगाउनुहोस् ।

Find the height of the house.

(d) \(AE = EC\) भएको अवस्थामा \(\angle CAH\) को मान कति हुन्छ ? कारण दिनुहोस् ।

What is the value of \(\angle CAH\) when \(AE = EC\)? Give reason.

[1 + 1 + 1 + 1]
Asked on 2081 Exam
20.

हिमालीको उचाइ 1.22 मि. छ । उनले कोण नाप्ने यन्त्रको सहयोगमा विद्यालय भवनभन्दा 36 मि. परबाट विद्यालय भवनको टुप्पो अवलोकन गर्दा \(30^\circ\) को कोण पाइन् ।

The height of Himali is 1.22 m. She observed the top of the school building standing 36 m far from the base of school building found the angle of \(30^\circ\).

(a) दिइएको सन्दर्भ अनुसार हिमालीले विद्यालय भवनको टुप्पोमा हेर्दा बनेको कोणलाई के भनिन्छ ? लेख्नुहोस् ।

What is the name of the angle found when Himali observed at the top of school building according to the given context? Write it.

(b) माथिको सन्दर्भ अनुसारको चित्र बनाउनुहोस् ।

Sketch the figure from the above context.

(c) विद्यालय भवनको उचाइ निकाल्नुहोस् ।

Find the height of the school building.

(d) विद्यालय भवनको टुप्पो हेर्दा \(60^\circ\) को कोण बनाउन हिमाली उक्त स्थानबाट कति मिटर नजिक वा टाढा हिड्नु पर्छ ? कारण दिनुहोस् ।

How many meter should Himali have to walk nearer or farther from that place to make the angle of the top of the building to be \(60^\circ\)? Give reason.

[1 + 1 + 1 + 1]
Asked on 2081 Exam
21.

दिइएको चित्रमा \(\triangle ABC\) र \(\triangle BCD\) एउटै आधार BC र उही समानान्तर रेखाहरू AD र BC बिच रहेका छन् । विन्दु B बाट रेखा AC मा लम्ब BP खिचिएको छ ।

In the given figure, \(\triangle ABC\) and \(\triangle BCD\) are standing on same base BC and between same parallel lines AD and BC. From the point B, a perpendicular BP is drawn to the line AC.

[Figure: Triangles ABC and BCD on same base BC between parallel lines AD and BC, with perpendicular BP from B to AC]

(a) दिइएको चित्रमा \(\triangle BAD\) को क्षेत्रफलसँग बराबर हुने त्रिभुजको नाम लेख्नुहोस् ।

Write the name of triangle whose area is equal to area of \(\triangle BAD\) in the given figure.

(b) यदि \(AC = 9\) से.मि. र \(BP = 6\) से.मि. भए त्रिभुज BCD को क्षेत्रफल पत्ता लगाउनुहोस् ।

If \(AC = 9\) cm and \(BP = 6\) cm, find the area of triangle BCD.

(c) दिइएको चित्रमा PQRS एउटा समलम्ब चतुर्भुज हो । जहाँ PQ\(\parallel\)SR छ । साथै M र N क्रमशः विकर्णहरू PR र QS का मध्यविन्दुहरू हुन् भने \(\triangle MSR = \triangle NSR\) हुन्छ भनि प्रमाणित गर्नुहोस् ।

In the given figure, PQRS is a trapezium, where PQ\(\parallel\)SR. M and N are the mid points of the diagonals PR and QS respectively. Prove that: \(\triangle MSR = \triangle NSR\).

[Figure: Trapezium PQRS with PQ parallel SR, M and N as midpoints of diagonals PR and QS]

[1 + 2 + 2]
Asked on 2081 Exam
25.

दिइएको चित्रमा \(\triangle PQT\), समानान्तर चतुर्भुजहरू PQRS र PQUT एउटै आधार PQ र उही समानान्तर रेखाहरू PQ र TR विच वनेका छन् ।

In the given figure, \(\triangle PQT\), parallelograms PQRS and PQUT are standing on the same base PQ and between the same parallel lines PQ and TR.

[Figure: Triangle PQT and parallelograms PQRS and PQUT on same base PQ between parallel lines PQ and TR]

(a) समानान्तर चतुर्भुजहरू PQRS र PQUT का क्षेत्रफलविचको सम्बन्ध लेख्नुहोस् ।

Write the relation between the areas of parallelograms PQRS and PQUT.

(b) \(\triangle PQT\) को क्षेत्रफल समानान्तर चतुर्भुज PQRS को क्षेत्रफलको आधा हुन्छ भनि प्रमाणित गर्नुहोस् ।

Prove that area of \(\triangle PQT\) is half of the area of parallelogram PQRS.

(c) के दिइएको चित्रमा \(\triangle APD\) र \(\triangle BPQ\) को क्षेत्रफल बराबर हुन्छन् ? कारण सहित लेख्नुहोस् ।

Are the areas of \(\triangle APD\) and \(\triangle BPQ\) equal in the given figure? Write with reason.

[Figure: Parallelogram ABCD with point P on AB and point Q, triangles APD and BPQ]

[1 + 2 + 2]
Asked on 2081 Exam
26.

संगै दिइएको चित्रमा PQ ले घरको उचाइ, RS ले टावरको उचाइ र QS ले घरदेखि टावरसम्मको दूरीलाई जनाउँछ ।

In the given figure alongside, PQ represents the height of house, RS represents the height of tower and QS represents the distance from the house to the tower.

[Figure: House PQ height 30m, tower RS height 72m, angle of elevation 60 degrees from roof of house to top of tower]

(a) घरको छतवाट टावरको टुप्पोमा अवलोकन गर्दा बन्ने उन्नताश कोणको नाम लेख्नुहोस् ।

Write the name of angle of elevation of top of tower as observed from the roof of the house.

(b) TR को मान पत्ता लगाउनुहोस् ।

Find the value of TR.

(c) घर र टावर विचको दूरी पत्ता लगाउनुहोस् ।

Find the distance between the house and the tower.

(d) के टावरको टुप्पोवाट 28 मिटर तलको विन्दुवाट घरको छत हेर्दा \(30^\circ\) को अवनति कोण बन्छ ? कारण लेख्नुहोस् ।

Is the angle of depression of \(30^\circ\) formed when the roof of the house is observed from a point 28 meter below the top of the tower? Give reason.

[1 + 1 + 1 + 1]
Asked on 2081 Exam
27.

दिइएको चित्रमा एउटै आधार BC र उही समानान्तर रेखाहरू AF र BC बीच समानान्तर चतुर्भुज EBCF र वर्ग ABCD छन् ।
In the given figure, parallelogram EBCF and square ABCD are on the same base BC and between the same parallel lines AF and BC.

[Figure: Parallelogram EBCF and square ABCD on same base BC between parallel lines AF and BC, with points A, E, D, F on top line and B, C on bottom]

(a) एउटै आधार र उही समानान्तर रेखाहरूविचका समानान्तर चतुर्भुजहरूको क्षेत्रफलविचको सम्बन्ध लेख्नुहोस् ।
Write the relation between the areas of parallelograms standing on the same base and between same parallel lines.

(b) प्रमाणित गर्नुहोस् (Prove that):
स.च. EBCF को क्षेत्रफल = वर्ग ABCD को क्षेत्रफल
Area of parallelogram EBCF = Area of square ABCD.

(c) दिइएको चित्रमा PQRS एउटा समानान्तर चतुर्भुज हो र TR को मध्यबिन्दु M छ ।
In the given figure PQRS is a parallelogram and M is the mid-point of TR.

[Figure: Parallelogram PQRS with diagonal TR and M as midpoint of TR, shaded region TQM and SRM]

प्रमाणित गर्नुहोस् (Prove that):
\(\triangle TQM = \dfrac{1}{2}(\triangle PQT + \triangle SRT)\)

[1 + 2 + 2]
Asked on 2080 Exam
31.

एउटा रुख हुरीले भाँचिएछ । भाँचिएको भागबाट नछुटिएको अवस्थामा टुप्पोले जमिनसँग \(30°\) को कोण बनाउँछ । उक्त रुखको टुप्पोले भूईमा छोएको बिन्दु उक्त रुखको फेददेखि \(9\sqrt{3}\) मिटर टाढा छ ।

A tree is broken by wind. The top of the broken part without detaching makes an angle of \(30^\circ\) with the ground. The distance from the foot of the tree to the point on the ground where the top of the tree touches the ground is \(9\sqrt{3}\) m.

a) उन्नतांश कोणलाई परिभाषित गर्नुहोस् । (Define angle of elevation.)

b) माथिको सन्दर्भबाट बन्ने चित्र कोर्नुहोस् ।

Sketch the figure from the above context.

c) रुखको भाँचिएको भागको लम्बाइ पत्ता लगाउनुहोस् ।

Find the length of the broken part of the tree.

d) उक्त रुखको भाँचिएपछि बाँकि रहेको भाग पनि \(9\sqrt{3}\) मिटर हुँदा टुप्पोले जमिनसँग कति डिग्रीको कोण बनाउँछ ? कारण लेख्नुहोस् ।

If the length of the remaining part of the tree after broken is also \(9\sqrt{3}\) meter, what angle will the top of the tree make with the ground? Write reason.

[1 + 1 + 1 + 1]
Asked on 2080 Exam
33.

एउटा रुख कुनै ठाउँबाट हावाले भाँचिएर नछुट्टिएको अवस्थामा टुप्पोले जमिनमा छुंदा जमिनसंग \(60^\circ\) को कोण बनेको छ । उक्त रुखको भाँचिएको भागको लम्बाई 20 मिटर छ ।

When a tree is broken by the wind from somewhere without detaching and its top touches the ground making an angle of \(60^\circ\) with the ground. The length of broken part of the tree is 20 meter.

a) उन्नतांश कोणलाई परिभाषित गर्नुहोस् ।

Define the angle of elevation.

b) भाँचिएपछि रुखको टुप्पो र फेदविचको दूरी कति हुन्छ ? पत्ता लगाउनुहोस् ।

What is the distance between top and bottom of the tree after broken? Find it.

c) भाँचिनुपूर्व रुखको उचाइ कति थियो ? पत्ता लगाउनुहोस् ।

What was the height of the tree before it was broken? Find it.

d) उक्त रुख भाँचिदा बाँकी रहेको भागसँग टुप्पो र फेदविचको दूरी बराबर भएको भए जमिनसँग कति डिग्रीको कोण बन्थ्यो ? उपयुक्त तर्कसहित लेख्नुहोस् ।

If the distance between the top and the bottom of the tree was equal to the remaining part of the tree when broken, how many degrees of angle would it make with the ground? Write with suitable argument.

[1 + 1 + 1 + 1]
Asked on 2080 Exam
34.

एउटै आधार MN र उही समामान्तर रेखाहरू MN र PQ बिचमा रहेका त्रिभुज PMN र समानान्तर चतुर्भुज MNQR छन् ।

Triangle PMN and parallelogram MNQR are on the same base MN and between the same parallel lines MN and PQ.

[Figure: Triangle PMN and parallelogram MNQR on the same base MN between parallel lines MN and PQ]

a) एउटै आधार र उही समानान्तर रेखाहरूविच रहेका त्रिभुजहरूको क्षेत्रफलविचको सम्बन्ध लेख्नुहोस् ।
Write the relationship between the area of triangles standing on the same base and between the same parallel lines.

b) यदि \(\triangle QRN\) को क्षेत्रफल 25 वर्ग से. मि. भए \(\triangle PMN\) को क्षेत्रफल पत्ता लगाउनुहोस् ।
If the area of \(\triangle QRN\) is 25 square cm, find the area of \(\triangle PMN\).

c) त्रिभुज PMN को आधार समानान्तर चतुर्भुज MNQR को आधारभन्दा दोव्वर भएको भए त्रिभुज र समानान्तर चतुर्भुजको क्षेत्रफलहरू वीचको सम्बन्ध के हुन्थ्यो ? तर्क दिनुहोस् ।
What would be the relation between the areas of triangle and parallelogram if the base of the triangle was double of the base of the parallelogram? Give logic.

[1 + 2 + 1]

Asked on 2082 Exam
6.

दिइएको चित्रमा \(PQ \parallel RS\), \(RX \parallel SQ\) र \(PR \parallel YS\) दिइएका छन् ।

In the given figure, \(PQ \parallel RS\), \(RX \parallel SQ\) and \(PR \parallel YS\) are given.

[Figure: Figure with PQ parallel RS, RX parallel SQ, PR parallel YS, showing triangles and parallelograms]

(a) त्रिभुज QRS र समानान्तर चतुर्भुज PRSY को क्षेत्रफलविचको अनुपात लेख्नुहोस् ।

Write the ratio of areas of triangle QRS and parallelogram PRSY.

(b) समानान्तर चतुर्भुज PRSY र समानान्तर चतुर्भुज XRSQ को क्षेत्रफल बराबर हुन्छ भनी प्रमाणित गर्नुहोस् ।

Prove that the areas of parallelogram PRSY and parallelogram XRSQ are equal.

(c) भुजाहरू \(BC = 6\) से.मी., \(AC = 7\) से.मी. र \(\angle ABC = 75^\circ\) भएको एउटा त्रिभुज ABC रचना गरी उक्त त्रिभुजको क्षेत्रफलसँग बराबर हुने गरी भुजा \(ED = 6.5\) से.मी. भएको एउटा समानान्तर चतुर्भुज CDEF को रचना गर्नुहोस् ।

Construct a triangle ABC in which sides \(BC = 6\) cm, \(AC = 7\) cm and \(\angle ABC = 75^\circ\). Also construct parallelogram CDEF whose one side \(ED = 6.5\) cm and equal in area to the given triangle.

[1 + 2 + 3]
Asked on 2080 Exam
15.

चित्रमा समानान्तर चतुर्भुज PQRS र \(\triangle MSR\) एउटै आधार SR र उही समानान्तर रेखाहरू PQ र SR बिच बनेका छन् ।

In the figure, parallelogram PQRS and \(\triangle MSR\) are standing on the same base SR and between the same parallel lines PQ and SR.

[Figure: Parallelogram PQRS and triangle MSR on same base SR between parallel lines PQ and SR]

a) \(\triangle PSM\) र \(\triangle QRM\) को क्षेत्रफलको योगफल 24 वर्ग से.मि. भए \(\triangle MSR\) को क्षेत्रफल कति हुन्छ ? लेख्नुहोस् ।
If the sum of areas of \(\triangle PSM\) and \(\triangle QRM\) is 24 sq. cm, what is the area of \(\triangle MSR\)? Write it.

b) समानान्तर चतुर्भुज PQRS को क्षेत्रफलसँग बराबर भएको त्रिभुज बनाउन \(\triangle MSR\) को आधार SR मा के परिवर्तन गर्नु पर्दछ ? कारण दिनुहोस् ।
To form a triangle equal with the parallelogram PQRS in area, what change should be made on the base SR of \(\triangle MSR\)? Give reason.

c) समानान्तर चतुर्भुज ABCD को रचना गर्नुहोस् जहाँ, \(AB = 6\) से.मि., \(BC = 4\) से.मि. र \(\angle DAB = 60^\circ\) छन् । उक्त समानान्तर चतुर्भुजको क्षेत्रफलसँग बराबर हुने गरी एउटा भुजाको लम्बाई 7 से.मि. भएको एउटा त्रिभुजको पनि रचना गर्नुहोस् ।
Construct a parallelogram ABCD in which, \(AB = 6\) cm, \(BC = 4\) cm and \(\angle DAB = 60^\circ\). Also, construct a triangle having one side 7 cm and equal in area to the parallelogram.

[1 + 1 + 3]
Asked on 2080 Exam
17.

दिइएको चित्रमा समानान्तर चतुर्भुज PQRS भित्र कुनै एउटा विन्दु X छ ।

In the given figure, X is any point within a parallelogram PQRS.

[Figure: Parallelogram PQRS with an interior point X and diagonals drawn]

a) एउटै आधार र उही समानान्तर रेखाहरू बिच बनेका त्रिभुज र समानान्तर चतुर्भुजको क्षेत्रफलबीचको सम्बन्ध लेख्नुहोस् ।

Write the relationship between the area of triangle and a parallelogram standing on the same base and between the same parallel lines.

b) के \(\triangle PQX\) र \(\triangle RSX\) को क्षेत्रफल सधै बराबर हुन्छन् ? कारण दिनुहोस् ।

Are the areas of \(\triangle PQX\) and \(\triangle RSX\) always equal? Give reason.

c) चतुर्भुज ABCD को रचना गर्नुहोस् । जहाँ, \(AB = 5.1\) से.मि., \(BC = 4.9\) से.मि., \(CD = 5.5\) से.मि., \(DA = 6.1\) से.मि., र \(BD = 5.3\) से.मि. छन् । उक्त चतुर्भुजको क्षेत्रफलसँग बराबर हुने गरी एउटा त्रिभुजको पनि रचना गर्नुहोस् ।

Construct a quadrilateral ABCD with \(AB = 5.1\) cm, \(BC = 4.9\) cm, \(CD = 5.5\) cm, \(DA = 6.1\) cm and \(BD = 5.3\) cm. Also, construct a triangle whose area is equal to the area of the quadrilateral.

[1 + 2 + 3]

Asked on 2082 Exam
2.

तलको तालिकामा 30 जना विद्यार्थीहरूले प्राप्त गरेको प्राप्ताङ्क प्रस्तुत गरिएको छ ।
The marks obtained by 30 students are presented in the table below.

प्राप्ताङ्क / Marks obtained 0 - 10 0 - 20 0 - 30 0 - 40 0 - 50
विद्यार्थीको सङ्ख्या / No. of students 12 17 20 22 30

(a) मध्यिका पत्ता लगाउने सूत्र \((M_d) = L + \dfrac{\frac{N}{2} - c.f.}{f} \times i\) मा 'L' ले के जनाउँछ ? लेख्नुहोस् ।
What does 'L' represent for in formula to find the median \((M_d) = L + \dfrac{\frac{N}{2} - c.f.}{f} \times i\)? Write it.

(b) दिइएको तथ्याङ्कको मध्यिका पत्ता लगाउनुहोस् ।
Find the median of the given data.

(c) उक्त तथ्याङ्कबाट औसत प्राप्ताङ्क गणना गर्नुहोस् ।
Calculate the average marks from the data.

(d) यदि दिइएको तथ्याङ्कबाट (0 - 30) प्राप्ताङ्क ल्याउने विद्यार्थी सङ्ख्या हटाइयो भने औसत प्राप्ताङ्कमा कतिको फरक पर्छ ? पत्ता लगाउनुहोस् ।
If the student securing (0 - 30) marks are avoided from the given data, what difference shows in the average marks? Find it.

[1 + 2 + 2 + 1]
Asked on 2082 Exam
3.

एउटा परीक्षामा विद्यार्थीहरूले गणित विषयमा प्राप्त गरेको प्राप्ताङ्कलाई तालिकामा दिइएको छ :

In an examination, the marks obtained by the students in mathematics subject are given below in the table.

प्राप्ताङ्क / Marks obtained 0 - 10 10 - 20 20 - 30 30 - 40 40 - 50
विद्यार्थीको सङ्ख्या / No. of Students 2 3 4 p 6

(a) यदि सो तथ्याङ्कको मधिका 34 भए मधिका श्रेणी लेख्नुहोस् ।

If the median of the given data is 34, then write the median class.

(b) p को मान पत्ता लगाउनुहोस् ।

Find the value of p.

(c) सो तथ्याङ्कको मध्यक निकाल्नुहोस् ।

Calculate the mean of the given data.

(d) सो परीक्षामा सहभागी विद्यार्थी सङ्ख्यामध्ये मधिका श्रेणीभन्दा तल प्राप्ताङ्क ल्याउने विद्यार्थी कति प्रतिशत रहेछन् ? पत्ता लगाउनुहोस् ।

Among all the participants in the exams, what percentage of students obtained mark below the median class? Find it.

[1 + 2 + 2 + 1]
Asked on 2082 Exam
4.

100 पूर्णाङ्कको एउटा परीक्षामा विद्यार्थीहरूले पाप्त गरेका प्राप्ताङ्क निम्न तालिकामा दिइएको छ :

The marks obtained by students in an examination with full marks 100 are given in the following table.

प्राप्ताङ्क (Marks obtained) 0–20 20–40 40–60 60–80 80–100
विद्यार्थीको सङ्ख्या (No. of students) 2 3 x 5 4

(a) यदि दिइएको तथ्याङ्कको मध्यक 56 भए \(x\) को मान पत्ता लगाउनुहोस् ।

If the mean of the given data is 56, find the value of \(x\).

(b) दिइएको तथ्याङ्कको रीत पर्ने श्रेणी लेख्नुहोस् ।

Write the model class of the given data.

(c) दिइएको तथ्याङ्कवाट पहिलो चतुर्थांश पत्ता लगाउनुहोस् ।

Find the first quartile from the given data.

(d) 40 वा 40 भन्दा बढी अङ्क प्राप्त गर्ने र 40 भन्दा कम अङ्क प्राप्त गर्ने विद्यार्थीहरूविच तुलना गर्नुहोस् ।

Compare between the number of students securing 40 or above 40 marks and less than 40 marks.

[2 + 1 + 2 + 1]
Asked on 2081 Exam
8.

एउटा कक्षाका 50 जना विद्यार्थीहरूले गणित विषयको 60 पूर्णाङ्कको परीक्षामा प्राप्त गरेको प्राप्ताङ्कलाई तालिकामा दिइएको छ ।

The marks obtained by 50 students of a class in an exam of maths with full mark 60 are given in the table.

प्राप्ताङ्क (Obtained marks) 10-20 20-30 30-40 40-50 50-60
विद्यार्थी सङ्ख्या (Number of students) 7 13 15 10 5

(a) रीत पर्ने श्रेणी लेख्नुहोस् ।

Write the class of mode.

(b) दिइएको तथ्याङ्कवाट पहिलो चतुर्थांश \(Q_1\) को मान निकाल्नुहोस् ।

Find the value of first quartile \((Q_1)\) from the given data.

(c) दिइएको तथ्याङ्कवाट औसत प्राप्ताङ्क गणना गर्नुहोस् ।

Calculate the average mark from the given data.

(d) 40 वा 40 भन्दा बढी प्राप्ताङ्क ल्याउने विद्यार्थीहरूको औसत प्राप्ताङ्क कति छ ? पत्ता लगाउनुहोस् ।

What is the average mark of the students who obtained 40 or more than 40 marks? Find it.

[1 + 2 + 2 + 1]
Asked on 2081 Exam
11.

75 पूर्णाङ्कको गणितको एउटा परीक्षामा विद्यार्थीहरूले प्राप्त गरेका अङ्क तलको तालिकामा दिइएको छ ।

The marks obtained by the students in an exam of mathematics of 75 full marks are given in the following table.

प्राप्ताङ्क (Obtained Marks) 0-15 15-30 30-45 45-60 60-75
विद्यार्थी सङ्ख्या (Number of students) 2 5 4 6 3

(a) माथिको तथ्याङ्कबाट रीत पर्ने श्रेणी उल्लेख गर्नुहोस् ।

Illustrate the modal class from the above data.

(b) माथिको तालिकाबाट मधिका निकाल्नुहोस् ।

Find the median from the above table.

(c) माथिको तालिकाबाट मध्यक पत्ता लगाउनुहोस् ।

Find the mean from the above table.

(d) सो परीक्षामा सहभागी विद्यार्थी सङ्ख्यामध्ये रीत श्रेणी भन्दा तलको वर्गान्तरमा कति प्रतिशत विद्यार्थी रहेछन् ? पत्ता लगाउनुहोस् ।

Among all the participants in the exam, what percentage of students obtained marks below the model class? Find it.

[1 + 2 + 2 + 1]
Asked on 2081 Exam
13.

दिइएको तथ्याङ्कले गणित विषयको 50 पूर्णाङ्कको एउटा आन्तरिक परीक्षामा विद्यार्थीहरूले प्राप्त गरेको प्राप्ताङ्कलाई प्रतिनिधित्व गर्दछ । उक्त तथ्याङ्कको मध्यका 29 छ ।

The given data represents the marks obtained by the students in an internal examination of Mathematics with full marks 50. The median of the data is 29.

प्राप्ताङ्क (Obtained Marks) 0–10 10–20 20–30 30–40 40–50
विद्यार्थी सङ्ख्या (Number of students) 3 7 10 x 10

(a) मध्यका श्रेणी लेख्नुहोस् ।

Write the median class.

(b) \(x\) को मान पत्ता लगाउनुहोस् ।

Find the value of \(x\).

(c) दिइएको तथ्याङ्कको मध्यक प्राप्ताङ्क पत्ता लगाउनुहोस् ।

Find the mean mark of the given data.

(d) 20 अङ्क भन्दा कम र 20 वा सोभन्दा बढी अङ्क प्राप्त गर्ने विद्यार्थीहरूको अनुपात निकाल्नुहोस् ।

Find the ratio of students obtaining marks less than 20 and 20 or more than 20.

[1 + 2 + 2 + 1]
Asked on 2080 Exam
15.

निम्न तालिकामा 24 जना विद्यार्थीहरूको उमेर समूह दिइएको छ ।

The age groups of 24 students are given in the following table.

उमेर (वर्षमा)
Age (In years)
0 – 5 5 – 10 10 – 15 15 – 20 20 – 25
विद्यार्थीहरूको सङ्ख्या
No. of students
2 4 8 6 4

a) एउटा अविच्छिन्न श्रेणीमा मध्यिका पत्ता लगाउने सूत्र \(M_d = L + \frac{\frac{N}{2} - c.f.}{f} \times i\) मा c.f. ले के जनाउँछ ? लेख्नुहोस् ।
In the formula to find the median of a continuous series, \(M_d = L + \frac{\frac{N}{2} - c.f.}{f} \times i\), what does c.f. represent? Write it.

b) दिएको तथ्याङ्कबाट औसत उमेर कति हुन्छ ? पत्ता लगाउनुहोस् ।
What is the average age from the given data? Find it.

c) दिएको तथ्याङ्कबाट रीत पत्ता लगाउनुहोस् ।
Find the mode from the given data.

d) कुनै पनि तथ्याङ्कको यैभन्दा उत्तम केन्द्रिय मापक कुन हो ? तपाईंको तर्क दिनुहोस् ।
Which is the best measure of central tendency for any data? Give your logic.

[1 + 2 + 2 + 1]
Asked on 2080 Exam
17.

एउटा समुदायमा बस्ने 20 जना मानिसहरूको उमेरसमूह तल तालिकामा दिइएको छ ।

The age group of 20 people in a community is given in the table below.

उमेर वर्षमा (Age in years) 20 – 30 30 – 40 40 – 50 50 – 60 60 – 70 70 – 80
मानिसहरूको संख्या (Number of people) 2 4 4 6 3 1

a) अविच्छिन्न श्रेणीको तेस्रो चतुर्थांश पत्ता लगाउने सूत्र \(Q_3 = L + \frac{\frac{3N}{4} - c.f}{f} \times i\) मा संकेत \(i\) ले के जनाउँछ ? लेख्नुहोस् ।

What does the symbol '\(i\)' denote in the formula \(Q_3 = L + \frac{\frac{3N}{4} - c.f}{f} \times i\) to find the third quartile of a continuous series? Write it.

b) उक्त तथ्याइबाट तेस्रो चतुर्थांश पर्ने श्रेणी पत्ता लगाउनुहोस् ।

Find the class of third quartile from the given data.

c) तेस्रो चतुर्थांशको मान कति हुन्छ ? पत्ता लगाउनुहोस् ।

What is the value of third quartile? Find it.

d) के दिएको तथ्याङ्कको मध्यका पर्ने श्रेणी र तेस्रो चतुर्थांश पर्ने श्रेणी समान छ ? कारण दिनुहोस् ।

Are the class of median and the class of third quartile of the given data same? Give reason.

[1 + 1 + 2 + 1]

Asked on 2082 Exam
1.

एउटा भोलामा उस्तै र उत्रै 2 ओटा राता र 3 ओटा सेता बलहरू छन् । दुईओटा बलहरू एकपछि अर्को पुनः नराखी उक्त भोलाबाट फिकिएका छन् ।

In a bag, there are 2 red and 3 white balls having same shape and size. Two balls are drawn randomly one after another without replacement from the bag.

(a) अनाश्रित घटनामा सम्भाव्यताको गुणन सिद्धान्त लेख्नुहोस् ।

Write the multiplication law of probability in independent events.

(b) सबै सम्भावित परिणामहरूको सम्भाव्यतालाई वृक्ष चित्रमा देखाउनुहोस् ।

Show the probability of all the possible outcomes in a tree diagram.

(c) दुवै बलहरू रातो आउने सम्भाव्यता पत्ता लगाउनुहोस् ।

Find the probability of getting both balls are red.

(d) दुवै बलहरू एउटै रङका पर्ने र दुवै बलहरू फरक रङका पर्ने सम्भाव्यताबिच तुलना गर्नुहोस् ।

Compare the probability of getting both balls of same color and the different color.

[1 + 2 + 1 + 1]
Asked on 2082 Exam
2.

राम्ररी फिटिएको 52 पत्ती तासको गड्डीबाट नहेरीकन दुईओटा तासहरू एकपछि अर्को पुनः राखेर फिटिएका छन् ।
Two cards are drawn randomly one after another with replacement from a well shuffled deck of 52 cards.

(a) अनाश्रित घटनाहरू भनेको के हो ? लेख्नुहोस् ।
What are independent events? Write it.

(b) अनुहार भएको तास पर्ने र नपर्ने सबै परिणामहरूको सम्भाव्यतालाई वृक्ष चित्रमा देखाउनुहोस् ।
Show the probability of all the possible outcomes of getting and not getting faced cards in a tree diagram.

(c) दुवै तास अनुहार भएको पत्ति पर्ने सम्भाव्यता कति हुन्छ ? पत्ता लगाउनुहोस् ।
What is the probability of getting both faced cards? Find it.

(d) दुईओटा तासहरू एकपछि अर्को पुनः राखी र नराखीकन फिक्दा दुवै तासहरू अनुहार भएको पर्ने सम्भाव्यताहरूबिच कति भिन्नता हुन्छ ? पत्ता लगाउनुहोस् ।
What is the difference between the probabilities of both cards being faced cards if two cards are drawn one after another with replacement and without replacement? Find it.

[1 + 2 + 1 + 1]
Asked on 2082 Exam
3.

एउटा बाकसमा 3 ओटा राता र 4 ओटा काला बलहरू र उस्तै बलहरू राखिएका छन् । उक्त बाकसबाट एकपछि अर्को गरी पुनः नराखीकन दुईओटा बलहरू निकालिएका छन् ।

A box contains 3 red and 4 black balls of same shape and size. Two balls are drawn one after another without replacement.

(a) माथि उल्लेख गरिएका घटनाहरू कस्ता हुन्, लेख्नुहोस् ।

What type of events are mentioned above? Write it.

(b) उक्त परीक्षणलाई वृक्ष चित्रमा देखाउनुहोस् ।

Show the above experiment in a tree diagram.

(c) पहिलो बल रातो र दोस्रो बल कालो पर्ने सम्भाव्यता पत्ता लगाउनुहोस् ।

Find the probability of getting first ball red and second ball black.

(d) यदि थप 2 ओटा राता बलहरू सो बाकसमा थपियो र उक्त बाकसबाट दुई ओटा बलहरू एकपछि अर्को पुनः नराखी फिक्दा दुवै बल रातो रङ्का पर्ने सम्भाव्यता कति हुन्छ ? पत्ता लगाउनुहोस् ।

If 2 red balls are added in the box and two balls are drawn randomly one after another from the box without replacement then what is the probability of getting both balls of red colour? Find it.

[1 + 2 + 1 + 1]
Asked on 2082 Exam
4.

एउटा वाकसमा 6 ओटा सेता र 4 ओटा काला उस्तै र उत्रै बलहरू छन् । दुईओटा बलहरू एकपछि अर्को गर्दै नहेरिकन पुनः राखेर निकालिएका छन् ।

There are 6 white and 4 black balls of same shape and size in a box. Two balls are drawn randomly one after another with replacement.

(a) यदि A र B पारस्परिक निषेधक घटनाहरू हुन भने \(P(A \cup B)\) को सिद्धान्त लेख्नुहोस् ।

If A and B are mutually exclusive events, then write the principle of \(P(A \cup B)\).

(b) दिइएको घटनाको सम्भावित सबै परिणामहरूको सम्भाव्यतालाई वृक्ष चित्रमा प्रस्तुत गर्नुहोस् ।

Present the probability of all the possible outcomes of given event in a tree diagram.

(c) दुवै बलहरू एउटै रङ्गका पर्ने सम्भाव्यता पत्ता लगाउनुहोस् ।

Find the probability of getting same coloured ball?

(d) दुवै बलहरू एउटै रङ्गका पर्ने र फरक रङ्गका पर्ने सम्भाव्यताहरूविचको अनुपात पत्ता लगाउनुहोस् ।

Find the ratio of the probabilities of getting same coloured balls and different colored balls.

[1 + 2 + 1 + 1]
Asked on 2082 Exam
5.

कक्षा दशमा रहेका 27 जना केटी र 23 जना केटाहरूमध्येबाट दुई जना विद्यार्थीहरू नदोहोऱ्याइकन छानिएको छ ।

Among 27 girls and 23 boys of class ten, two students are selected randomly without repetition.

(a) दुईओटा घटनाहरू G र B पारस्पारिक निषेधित घटनाहरू नभएको अवस्थामा \(P(G \cup B)\) को सूत्र लेख्नुहोस् ।

Two events G and B are not mutually exclusive events, then write the formula of \(P(G \cup B)\).

(b) माथिको जानकारीबाट प्राप्त हुने सबै परिणामहरूको सम्भाव्यतालाई वृक्ष चित्रमा देखाउनुहोस् ।

Show the probability of all possible outcomes obtained from the above information in a tree diagram.

(c) एउटै लिङ्गका विद्यार्थी छानिने सम्भाव्यता पत्ता लगाउनुहोस् ।

Find the probability of selecting same gender student.

(d) दुवै केटी छानिने सम्भाव्यता जम्मा सम्भाव्याताभन्दा कतिले कम रहेछ ? पत्ता लगाउनुहोस् ।

By how much is the probability of selecting both girls less than the total probability? Find it.

[1 + 2 + 1 + 1]
Asked on 2082 Exam
6.

एउटा बाकसमा 6 ओटा राता र 5 ओटा सेता उस्तै र उत्रै गुच्चाहरू छन् । उक्त बाकसबाट दुईओटा गुच्चाहरू एकपछि अर्को नहेरीकन पुनः नराखी फिकिएको छ ।

A box contains 6 red and 5 white marbles of same shape and size. Two marbles are drawn randomly one after another without replacement from the box.

(a) यदि A र B दुई अनाश्रित घटनाहरू भएमा सम्भाव्यताको गुणन सिद्धान्तको सूत्र लेख्नुहोस् ।

If A and B are two independent events then write the formula of the multiplication law of probability.

(b) सबै सम्भावित परिणामहरूको सम्भाव्यतालाई वृक्ष चित्रमा देखाउनुहोस् ।

Show the probability of all possible outcomes in a tree diagram.

(c) दुवै गुच्चाहरू उही रङको पर्ने सम्भाव्यता पत्ता लगाउनुहोस् ।

Find the probability of getting both marbles of same colour.

(d) दुवै गुच्चाहरू उही रङको पर्ने सम्भाव्यता र फरक रङको पर्ने सम्भाव्यताविच तुलना गर्नुहोस् ।

Compare between the probability of getting both marbles of same colour and different colour.

[1 + 2 + 1 + 1]
Asked on 2082 Exam
7.

एउटा बाकसमा 5 ओटा हरियो र 7 ओटा निला उस्तै र उस्तै बलहरू छन् । उक्त बाकसबाट दुईओटा बलहरू एकपछि अर्को नहेरीकन पुनः राखेर फिटिएका छन् ।

A box contains 5 green and 7 blue balls of same shape and size. Two balls are drawn randomly one after another with replacement from the box.

(a) यदि A र B दुई ओटा अनाश्रित घटनाहरू भएमा सम्भाव्यताको गुणनको सिद्धान्तको सूत्र लेख्नुहोस् ।

If A and B are two independent events, write the formula of the multiplication law of probability.

(b) सबै सम्भावित परिणामहरूको सम्भाव्यतालाई वृक्ष चित्रमा देखाउनुहोस् ।

Show the probability of all the possible outcomes in a tree diagram.

(c) दुवै निला बलहरू प्राप्त गर्ने सम्भाव्यता पत्ता लगाउनुहोस् ।

Find the probability of getting both blue balls.

(d) एउटै रङका बलहरू र फरक रङका बलहरू पर्ने सम्भाव्यताको अनुपात पत्ता लगाउनुहोस् ।

Find the ratio of the probability of getting balls of the same colour to the different colour.

[1 + 2 + 1 + 1]
Asked on 2081 Exam
8.

एउटा वाकसमा उत्रै र उस्तै आकारका 5 ओटा राता र 3 ओटा सेता वलहरू राखिएका छन् ।

In a box, 5 red and 3 white balls of same size and shape are kept.

(a) पारस्परिक निषेधक घटनाहरूको सम्भाव्यताको जोड नियम लेख्नुहोस् ।

Write the addition law of probability of mutually exclusive events.

(b) वाकसमा राखिएका वलहरूवाट एकपछि अर्को गरेर दुईओटा वलहरू पुनः नराखी फिक्दा आउने सबै सम्भावित परिणामहरूको सम्भाव्यतालाई वृक्ष चित्रमा देखाउनुहोस् ।

Two balls are drawn one after another without replacement from the box. Show the probability of all the possible outcomes in a tree diagram.

(c) वृक्ष चित्रवाट दुवै वल सेतो पर्ने सम्भाव्यता निकाल्नुहोस् ।

Find the probability of getting both white balls from the tree diagram.

(d) दुवै वल पुनः राखी र पुनः नराखीकन फिक्दा दुवै वल सेतो पर्ने सम्भाव्यता विचको फरक निकाल्नुहोस् ।

Find the difference between the probability of both balls being white if two balls are drawn one after another with replacement and without replacement.

[1 + 2 + 1 + 1]
Asked on 2081 Exam
9.

एउटा भोलामा 7 ओटा काला र 4 ओटा राता उस्तै र उत्रै बलहरू छन् । दुई ओटा बलहरू एकपछि अर्को गरी पुनः नराखी भिकिएको छ ।

A bag contains 7 black and 4 red balls of same shape and size. Two balls are drawn randomly one after another without replacement.

(a) यदि B र R दुई अनाश्रित घटनाहरू भए \(P(B \cap R)\) को सूत्र लेख्नुहोस् ।

If B and R be two independent events then write the formula of \(P(B \cap R)\).

(b) सबै सम्भावित परिणामहरूको सम्भाव्यतालाई वृक्ष चित्रमा देखाउनुहोस् ।

Show the probability of all possible outcomes in a tree diagram.

(c) दुवै बल कालो नै पर्ने सम्भाव्यता पत्ता लगाउनुहोस् ।

Find the probability of getting both black balls.

(d) दुवै बल रातो पर्ने सम्भाव्यता, दुवै बल कालो पर्ने सम्भाव्यता भन्दा कति बढी वा घटी छ ? पत्ता लगाउनुहोस् ।

By how much the probability of getting both red balls is more or less than the probability of getting both black balls? Find it.

[1 + 2 + 1 + 1]
Asked on 2081 Exam
10.

राम्ररी फिटिएको 52 पत्ति तासको प्याकवाट नहेरीकन एकपछि अर्को (पुन नराखी) दुईवटा तास फिकिएका छन् ।

From a well shuffled pack of 52 cards two cards are drawn randomly one after another without replacement.

(a) सम्भाव्यताको गुणन सिद्धान्त लेख्नुहोस् ।

Write the multiplicative law of probability.

(b) अनुहार भएको तास पर्ने र नपर्ने सबै सम्भावित परीणामहरूको सम्भाव्यतालाई वृक्षचित्रमा देखाउनुहोस् ।

Show the probability of all possible outcomes of getting and not getting face cards in a tree diagram.

(c) दुवै तास अनुहार भएको पर्ने सम्भाव्यता निकाल्नुहोस् ।

Calculate the probability of getting both face cards.

(d) दुवै तास अनुहार भएको पर्ने सम्भाव्यता र दुवै तास अनुहार नभएको तास पर्ने सम्भाव्यताविच तुलना गर्नुहोस् ।

Compare between the probability of getting both face cards and the probability of not getting both face cards.

[1 + 2 + 1 + 1]
Asked on 2081 Exam
11.

एउटा बासकमा 6 ओटा सेता र 10 ओटा काला उस्तै र उत्रै बलहरू छन् । दुई ओटा बलहरू एकपछि अर्को गरी पुनः राखेर भिकिएका छन् ।

A box contains 6 white and 10 black balls of same shape and size. Two balls are drawn at random one after another with replacement.

(a) यदि A र B दुईओटा अनाश्रित घट्नाहरू भए सम्भाव्यताको गुणन सिद्धान्त लेख्नुहोस् ।

If A and B are two independent events, write the multiplication law of probability.

(b) सबै सम्भावित परिणामहरूको सम्भाव्यतालाई वृक्षचित्रमा देखाउनुहोस् ।

Show the probability of all the possible outcomes in a tree diagram.

(c) दुवै बल उही रङ्का पर्ने सम्भाव्यता पत्ता लगाउनुहोस् ।

Find the probability of getting both balls of same color.

(d) दुवै बल फरक रङ्का पर्ने सम्भाव्यता, दुवै बल सेता रङ्का पर्ने सम्भाव्यता भन्दा कति कम वा बढी हुन्छ ? पत्ता लगाउनुहोस् ।

By how much the probability of getting both balls of different color is less or more than probability of getting both balls of white color? Find it.

[1 + 2 + 1 + 1]
Asked on 2081 Exam
13.

एउटा भोलामा 7 ओटा काला र 4 ओटा राता उस्तै र उत्रै बलहरू छन् । दुईओटा बलहरू एक पछि अर्को गरी पुनः नराखी भिकिएका छन् ।

A bag contains 7 black and 4 red balls of same shape and size. Two balls are drawn randomly one after another without replacement.

(a) यदि B र R दुई ओटा अनाश्रित घटना भए \(P(B \cap R)\) को सूत्र लेख्नुहोस् ।

If B and R be two independent events then write the formula of \(P(B \cap R)\).

(b) सबै सम्भावित परिणामहरूको सम्भाव्यतालाई वृक्ष चित्रमा देखाउनुहोस् ।

Show the probabilities all the possible outcomes in a tree diagram.

(c) दुवै बल कालो नै पर्ने सम्भाव्यता पत्ता लगाउनुहोस् ।

Find the probability of getting both black balls.

(d) दुवै बल रातो पर्ने सम्भाव्यता, दुवै बल कालो पर्ने सम्भाव्यताभन्दा कति बढी वा घटी छ ? पत्ता लगाउनुहोस् ।

By how much the probability of getting both red balls is more or less than the probability of getting both black balls? Find it.

[1 + 2 + 1 + 1]
Asked on 2080 Exam
15.

राम्ररी फिटेको 52 पत्ती खेल्ने तासको गड्डीबाट दुई वटा तास एकपछि अर्को पुनः नराख्नेगरी थुतिएका छन् ।

Two cards are drawn one after another without replacement from a well shuffled deck of 52 playing cards.

a) यदि A र B दुई अनाश्रित घटनाहरू भए सम्भाव्यताको गुणन सिद्धान्त लेख्नुहोस् ।
Write the multiplication law of probability when A and B are independent events.

b) दुवै तास अनुहार भएको पर्ने र नपर्ने सम्भाव्यतालाई वृक्षचित्रमा देखाउनुहोस् ।
Show the probability of getting and not getting face card in a tree diagram.

c) दुवै तास अनुहार भएको पर्ने सम्भाव्यता कति हुन्छ ? पत्ता लगाउनुहोस् ।
What is the probability of getting both face cards? Find it.

d) दुवै तास अनुहार भएको पर्ने सम्भाव्यता पूर्ण सम्भाव्यता भन्दा कतिले कमी हुन्छ ? गणना गर्नुहोस् ।
By how much the probability of getting both face cards is less than total probability? Calculate it.

[1 + 2 + 1 + 1]
Asked on 2080 Exam
16.

एउटा भोलामा उस्तै र उत्रै 1 ओटा रातो, 1 ओटा कालो र 1 ओटा सेतो बलहरू छन् । दुईवटा बलहरू एकपछि अर्को गरी पुन: नराखीकन भिकिएका छन् ।

There are 1 red, 1 black and 1 white ball of the same shape and size in a bag. Two balls are drawn randomly one after another without replacement.

a) यदि A र B दुईओटा अनाश्रित घटनाहरू भए \(P(A \cap B)\) को सूत्र लेख्नुहोस् ।

If A and B are two independent events, write the formula of \(P(A \cap B)\).

b) सवै सम्भावित परिणामहरूको सम्भाव्यतालाई सम्भाव्यता वृक्षचित्रमा देखाउनुहोस् ।

Show the probability of all the possible outcomes in a probability tree diagram.

c) एउटा बल रातो र अर्को बल कालो पर्ने सम्भाव्यता पत्ता लगाउनुहोस् ।

Find the probability of getting a red ball and a black ball.

d) दुवै बल एउटै रङका पर्ने सम्भाव्यता सम्भव छ ? तर्क दिनुहोस् ।

Is there any possibility of getting both balls of same color? Give reason.

[1 + 2 + 2 + 1]
Asked on 2080 Exam
18.

एउटा वाकसमा 4 वटा सेता र 8 वटा काला उस्तै र उत्रै वलहरू छन् । दुईवटा वलहरू एकपछि अर्को गरी पुन : राखेर भिकिएका छन् ।

A box contains 4 white and 8 black balls of same shape and size. Two balls are drawn at random one after another with replacement.

a) यदि A र B दुईओटा अनाश्रित घटनाहरू भए सम्भाव्यताको गुणन सिद्धान्त लेख्नुहोस् ।
If A and B are two independent events, write the multiplication law of probability.

b) सवै सम्भावित परिणामहरूको सम्भाव्यतालाई वृक्षचित्रमा देखाउनुहोस् ।
Show the probability of all the possible outcomes in a tree diagram.

c) दुवै बल उही रङका पर्ने सम्भाव्यता पत्ता लगाउनुहोस् ।
Find the probability of getting both balls of same colour.

d) के एकै रङका पर्ने र फरक-फरक रङका पर्ने सम्भाव्यता तुलना गर्न मिल्छ ? कारण लेख्नुहोस् ।
Is the probability of getting same coloured balls and different coloured balls comparable? Give reason.

[1 + 2 + 1 + 1]
Asked on 2080 Exam
19.

एउटा भोलामा उस्तै र उत्रै 2 वटा राता र 4 वटा सेता बलहरू छन् । दुइओटा बलहरू एकपछि अर्को गरी पुन: नराखीकन फिकिएका छन् ।

There are 2 red and 4 white balls of the same shape and size in a bag. Two balls are drawn randomly one after another without replacement.

a) अनाश्रित घटनाहरू भनेको के हो ? लेख्नुहोस् ।

What is the independent events? Write it.

b) सबै सम्भावित परिणामहरूको सम्भाव्यतालाई वृक्षचित्रमा देखाउनुहोस् ।

Show the probability of all the possible outcomes in a tree diagram.

c) दुवै वल रातो पर्ने सम्भाव्यता कति हुन्छ ? पत्ता लगाउनुहोस् ।

What is the probability of getting both red balls? Find it.

d) दुवै वल फरक रङका पर्ने सम्भाव्यता दुवै वल रातो रङका पर्ने सम्भाव्यता भन्दा कति कम वा बढी हुन्छ ? पत्ता लगाउनुहोस् ।

How much the probability of getting both balls of different color is less or more than the probability of getting both balls of red color? Find it.

[1 + 2 + 2 + 1]