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The sum of the series 3/1^2+5/(1^2+2^2)+...

The sum of the series `3/1^2+5/(1^2+2^2)+7/(1^2+2^2+3^2)+...` is

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Find the sum of infinite terms of the series 3/1^2 + 5/(1^2 + 2^2) + 7/(1^2+2^2+3^2) + 9/(1^2+2^2+3^2+4^2)+...

Find the sum of first n terms of the series 3/1^2+5/(1^2+2^2)+7/(1^2+2^2+3^2) +.... .

The sum to 50 terms of the series 3/1^2+5/(1^2+2^2)+7/(1^+2^2+3^2)+….+… is

The sum to 50 terms of the series 3/1^2+5/(1^2+2^2)+7/(1^+2^2+3^2)+….+… is

The sum to 50 terms of the series 3/1^2+5/(1^2+2^2)+7/(1^+2^2+3^2)+….+… is

The sum of 50 terms of the series 3/(1^2)+5/(1^2+2^2)+7/(1^2+2^2+3^2)+........... is (a). (100)/(17) (b). (150)/(17) (c). (200)/(51) (d). (50)/(17)

The sum of 50 terms of the series 3/(1^2)+5/(1^2+2^2)+7/(1^2+2^2+3^2)+........... is (a). (100)/(17) (b). (150)/(17) (c). (200)/(51) (d). (50)/(17)

The sum of the series (3)/(1^(2))+(5)/(1^(2)+2^(2))+(7)/(1^(2)+2^(2)+3^(2))+...... upto n terms,is