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1. |
Find the sum to n terms of the series whose nth term is n (n-2). |
A. | \(\frac{n(n-1)(2n+4)}{6}\) |
B. | \(\frac{n(n+1)(2n-5)}{6}\) |
C. | \(\frac{(n-2)(2n-5)}{3}\) |
D. | \(\frac{n(n+1)(2n-5)}{3}\) |
Answer» C. | |