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The value of lim(x rarr 1) (x+x^2+...+x^...

The value of `lim_(x rarr 1) (x+x^2+...+x^n-n)/(x-1)` is

A

n

B

`(n+1)/2`

C

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

D

`(n(n-1))/2`

Text Solution

Verified by Experts

The correct Answer is:
C
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