1.

Sum of the series S=n^(2)((C_(0))/(C_(1)))+(n-1)^(2)((C_(1))/(C_(2)))+…+1^(2)((C_(n-1))/(C_(n))) equals

Answer»

`1/6n(n+1)(2n+1)`
`1/3n(n+1)(n+2)`
`1/6n(n+1)(n+2)`
`1/6n^(2)(n+1)(n+2)`

ANSWER :C


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