1.

The arithemetic mean of 1, 2, 3, …, n is –(A) \(\frac{n}{2}\) + 1(B) \(\frac{n}{2}\)(C) \(\frac{n+1}{2}\)(D) \(\frac{n-1}{2}\)

Answer»

Correct answer is (C) \(\frac{n+1}{2}\)



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