The nth term of a series of which all the terms are positive is define – InterviewSolution

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1.	The nth term of a series of which all the terms are positive is defined as T_n = n^2 + n then the sum of n terms of the series is :
Answer» `(N(n+1)(n+2))/6` `(n^3+4n)/n` `(5N)/9[n^2+n]` `(n(n+1)(n+2))/3` Answer :D

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