A

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Q. Which of the following gives the sum of the first n natural numbers?

  • (A) nc2
  • (B) (n-1)c2
  • (C) (n+1)c2
  • (D) (n+2)c2
Explanation by: Admin
the sum of first n natural numbers is given by n*(n+1)/2, which is equal to (n+1)c2.

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