1.

The sum of the following series: 1.1^2 (1 - 0/1) + 2.2^(2) (1 - 1/2)+ 3.3^2 (1 - 2/3) + 4.4^2 (1 - 3/4) +….. upto n terms is :

Answer»

`n.n^2 (1 - 1/n)`
`(n(n +1)(2N + 1))/(6)`
`(n(n + 1)^2)/(4)`
none of these

Answer :B


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