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If S is the sum to infinity of a G.P, wh...

If `S` is the sum to infinity of a G.P, whose first element is `a`, then the sum of the first `n` elements is

A

1.`S(1-(a)/(S))^(n)`

B

2.`S(1-(1-(a)/(S))^(n))`

C

3.`a(1-(1-(a)/(S))^(n))`

D

4.None of these

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The correct Answer is:
B
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