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Algebra Mathematical Induction

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Q.

If 1+5+12+22+35+------- to n terms = n²(n+1)/2, n^th term of L.H.S. is

A. n(4n-1)/3

B. n(3n-1)/2

C. n(3n+1)/2

D. n(4n+1)/3

E. None of the above

View Answer

Correct choice: B

Explanation:

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