A) \[\frac{n-1}{2}\]
B) \[\frac{n+1}{2}\]
C) \[\frac{n}{2}\]
D) \[n\]
Correct Answer: B
Solution :
A.M. \[=\frac{1+2+3+......+n}{n}=\frac{\frac{1}{2}n(n+1)}{n}=\frac{n+1}{2}\].You need to login to perform this action.
You will be redirected in
3 sec