lim(n rarroo)(sum(r=1)^(n)r^2)/n^3=...

`lim_(n rarroo)(sum_(r=1)^(n)r^2)/n^3=`

A

`-1/6`

B

`1/6`

C

`1/3`

D

`-1/3`

Verified by Experts

The correct Answer is:

C

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