The sum of the following series (1^2 +1) + (2^2 + 2) + (3^2 + 3) + (4 – InterviewSolution

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1.	The sum of the following series (1^2 +1) + (2^2 + 2) + (3^2 + 3) + (4^2 + 4) + …..+(n^2 + n) is :
Answer» `a)N^3` B)`((n^2 + n)5)/(3)` c)`(n(n + 1)(n+2))/(3)` d)can't be determined Answer :C

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