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Question

The sum of the series 1.2.3+2.3.4+...3.4.5.+...to n terms is

A
n(n+1)(n+2)
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B
(n+1)(n+2)(n+3)
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C
14n(n+1)(n+2)(n+3)
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D
14(n+1)(n+2)(n+3)
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Solution

The correct options are
A n(n+1)(n+2)
C 14n(n+1)(n+2)(n+3)
1983842_1243962_ans_9d4b98258c03415ca99bb86014c9381d.jpg

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