1.

Find the sum of n terms of the series 1*3*5 + 3*5*7 + 5*7*9 + …. is :

Answer»

`n(8n^3 + 11n^2 - n + 3)`
`n(2N^3 + 8n^2 + 7n -2)`
`8n^3 + 12n^2 - 2n - 3`
none of these

Answer :B


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