Sum to n terms of the series (1)/((1+x)(...

Sum to n terms of the series `(1)/((1+x)(1+2x))+(1)/((1+2x)(1+3x))+(1)/((1+3x)(1+4x))+`………

A

`(nx)/((1+x)(1+nx))`

B

`(n)/((1+x)[1+(1+n1)x]]`

C

`(x)/((1+x)(1+(n-1)x))`

D

none of these

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The correct Answer is:

B

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