The arithmetic mean of first n natural number [RPET 1986]

1.	The arithmetic mean of first n natural number [RPET 1986]
A.	\[\frac{n-1}{2}\]
B.	\[\frac{n+1}{2}\]
C.	\[\frac{n}{2}\]
D.	\[n\]
Answer» C. \[\frac{n}{2}\]

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The arithmetic mean of first n natural number [RPET 1986]

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