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The sum to infinity of the series : 1+...

The sum to infinity of the series `:`
`1+2 ( 1-(1)/( n )) + 3( 1 - ( 1)/( n ))^(2) +"...."` is `:`

A

`n^(2)`

B

`n( n + 1)`

C

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

D

None of these

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The correct Answer is:
A
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