a) A Committee of 5 members is to be formed from 6 boys and 4 girls. In how many ways can this be done so as to include at most three girls. b) Prove…
Class 12 Mathematics · 2083 · Solved Question with Answer
a) A Committee of 5 members is to be formed from 6 boys and 4 girls. In how many ways can this be done so as to include at most three girls.
b) Prove that \( 1 + 3 + 5 + \dots + (2n-1) = n^2 \) using principle of mathematical induction.
c) The total cost of 2 pen and 3 book is Rs. 1,100 and the total cost of 4 pen and 1 book in Rs. 700. Find the cost of a pen and a book using Cramer's rule.