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Let r^(th) term t (r) of a series if giv...

Let `r^(th)` term `t _(r)` of a series if given by `t _(c ) = (r )/(1+r^(2) + r^(4)) .` Then `lim _(n to oo) sum _(r =1) ^(n) t _(r)` is equal to :

A

2

B

`1/2`

C

`1`

D

`1/4`

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The correct Answer is:
B
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