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(1)/(3.5)+(1)/(5.7)+(1)/(7.9)+……..up to ...

`(1)/(3.5)+(1)/(5.7)+(1)/(7.9)+……..`up to n terms is equal to

A

`(n)/(3(2n+3)`

B

`(n)/(2n+3)`

C

`(1)/(n+2)(n+4)`

D

none of these

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