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The sum of 1^(st) n terms of the series ...

The sum of `1^(st)` n terms of the series
`(1^(2))/(1) + (1^(2) + 2^(2))/(1 + 2) + (1^(2) + 2^(2) + 3^(2))/(1 + 2 + 3) +`..

A

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

B

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

C

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

D

4)`(n(n-2))/(6)`

Text Solution

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The correct Answer is:
B
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