The mean of 1,2,3,4 .............., n is given by - Vidyadip

MCQ

The mean of $1,2,3,4$ .............., $n$ is given by

A
$\frac{n(n+1)}{2}$
B
$\frac{(n+1)}{4}$
C
$\frac{n}{2}$
✓
$\frac{(n+1)}{2}$

✓

Answer

Correct option: D.

$\frac{(n+1)}{2}$

(d): Sum of the numbers $1,2,3, \ldots, n=n \frac{(n+1)}{2}$
$\therefore \quad$ Mean $=\frac{n(n+1)}{2} \div n=\frac{n+1}{2}$

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