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Find the sum to n terms of the series ...

Find the sum to n terms of the series
`1^(2)/(1)+(1^(2)+2^(2))/(1+2)+(1^(2)+2^(2)+3^(2))/(1+2+3)+cdots`

A

`(n^2-2n)/3`

B

`(2n^2+n)/3`

C

`(n(n+2))/3`

D

`(2n^2-n)/3`

Text Solution

Verified by Experts

The correct Answer is:
C
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