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which of the following limits equal to 1...

which of the following limits equal to `1/2` : `(A) ` `lim_(n->oo)(1/1.3+1/3.5+...+1/((2n-1)(2n+1)))`

A

`1//4`

B

`1//2`

C

1

D

none of these

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The correct Answer is:
B
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