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The value of (1)/((1+a)(2+a))+(1)/((2+a)...

The value of `(1)/((1+a)(2+a))+(1)/((2+a)(3+a))+(1)/((3+a)(4+a))"......." " upto " oo` is (where, a is constant)

A

A. `(1)/(1+a)`

B

B. `(2)/(1+a)`

C

C. `oo`

D

D. None of these

Text Solution

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The correct Answer is:
B
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