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Questions  >>  CBSE XI  >>  Math  >>  Sequences and Series
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Find the sum of n terms of the series whose nth term is given by n2+2n.

n(n+1)(2n+1)6+2.(2n1)n(n+1)(2n+1)6+2.(2n11)n(n+1)(2n+1)6+.(2n+11)n(n+1)(2n+1)6+.(2n1)

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