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If x=1+y+y^(2)+.. . to oo, then y is...

If `x=1+y+y^(2)+.. .` to `oo,` then `y` is

A

`x-1`

B

`(x)/(1-x)`

C

`(x-1)/(x)`

D

`(1-x)/(x)`

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The correct Answer is:
C
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