Q. The sum of first 12 natural numbers is:

  • (A) 68
  • (B) 72
  • (C) 78
  • (D) 84
✅ Correct Answer: (C) 78
Explanation: n(n+1)/2 = 12×13/2 = 78.

Published by Ankit Singh ⭐ 8.48K Points at 04-Dec-2025 07:26 am in Math

Explanation by: Ankit Singh
n(n+1)/2 = 12×13/2 = 78.

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