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lim(nto oo)sum(r=1)^(n)r/(n^(2)+n+4) equ...

`lim_(nto oo)sum_(r=1)^(n)r/(n^(2)+n+4)` equals

A

0

B

`1//3`

C

`1//2`

D

`1`

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The correct Answer is:
A, B, C, D
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