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If each of n numbers x(i) = i (i = 1, 2...

If each of n numbers `x_(i)` = i (i = 1, 2, 3, ....n) is replaced by (i + 1)`x_(i)` , then the new mean is

A

`(n+3)/(2)`

B

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

C

`((n+1)(n+2))/(3n)`

D

`((n+1)(n+2))/(3)`

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