1.

The sum of the series `3/(1^2)+5/(1^2+2^2)+7/(1^2+2^2+3^2)+.....` upto n terms , isA. `(n)/(n+1)`B. `(n+2)/(n+1)`C. `(6n)/(n+1)`D. `(6(n+2))/(n+1)`

Answer» Correct Answer - A


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