JEE Main 2026 Mathematics question
If for 3 ≤ r ≤ 30, , then m equals:
Answer: (C)
Solution
This is the Vandermonde expansion of weighted sums, equal to for every r in range, so m = 33.
If for 3 ≤ r ≤ 30, , then m equals:
This is the Vandermonde expansion of weighted sums, equal to for every r in range, so m = 33.