The arithmetic mean of first n natural ...

The arithmetic mean of first `n` natural numbers, is

A

`(pi)/(2)`

B

`(n+1)/(2)`

C

`(n(n+1))/(2)`

D

`(n-1)/(2)`

Verified by Experts

The correct Answer is:

B

Clearly,
Required mean `=(1+2+ ... +n)/(n)=(n(n+1))/(2n)=(n+1)/(2)`

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