JEE Main · 2026 · 02 Apr 2026 · Shift 2 · Binomial Theorem

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If for ,

then equals:
  1. (A)31
  2. (B)32
  3. (C)33✓ Correct
  4. (D)34

Answer: (C)

Solution

The coefficients are , so the left side is . By the Vandermonde identity this equals . Comparing with gives .

JEE Main · 2026 · 02 Apr 2026 · Shift 2 · Single correct option

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