1.

The sum of n terms of the series 3/(1^2 * 2^2) + (5)/(2^2* 3^2) + (7)/(3^2 * 4^2) + … is :

Answer»

`(N^2 - 2n)/((n-1)^2)`
`(n^2 -2n)/((n+1)^2)`
`(2n^2 +1)/(n)`
NONE of these

Answer :B


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