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Number Test

Quick practice

Question 1 of 5

Find the sum of n terms of the series 1.2.4 + 2.3.5 + 3.4.6 + …

A

\left(n^{2}(n+1)(n+2)(n+3)\right) / 3

B

((n+1)(n+2)(n+3)) / 4

C

None of the Above

D

(n(n+1) / 12)\left(3 n^{2}+19 n+26\right)

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