Find the nth term and sum to n terms of the following series:2+6+ 12 2 – InterviewSolution

1.	Find the nth term and sum to n terms of the following series:2+6+ 12 20+[M. U. 70; P. U. 53; B
Answer» a=2 d=4nth term=a+(n-1)d=2+4n-4=4n-2sum of n terms=n/2(2+4n-2)=2n^2

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