The value of lim(xrarr1)(x+x^(2)+….+x^(n...

The value of `lim_(xrarr1)(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`

Verified by Experts

The correct Answer is:

C

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