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If |x| lt 1 , then the co - efficient of...

If `|x| lt 1` , then the co - efficient of `x^(n)` in the expansion of `(1+x+x^(2)+…. )^(2)` is :

A

n

B

`n-1`

C

`n+1`

D

`n+2`

Text Solution

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The correct Answer is:
C
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