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The mean deviation of the series a, a+d,...

The mean deviation of the series a, a+d, a+2d, . . . , a+2n from its mean is -

A

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

B

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

C

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

D

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

Text Solution

Verified by Experts

The correct Answer is:
C
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