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If alpha in R, n in N " and " n + 2 (n...

If ` alpha in R, n in N " and " n + 2 (n - 1)+ 3 (n-2) + …… +(n-1)2 + n.1 = alpha n ( n + 1) (n + 2) , " then " alpha = `

A

`1/2`

B

`1/3`

C

`1/5`

D

`1/6`

Text Solution

Verified by Experts

The correct Answer is:
D
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