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The A.M of the observations 1.3.5,3.5.7,...

The A.M of the observations `1.3.5,3.5.7,5.7.9,...,(2n-1)(2n+1)(2n+3)` is

A

`2n ^(3) +6n ^(2) +7n -2 `

B

` n^(3) +8n ^(2) +7n -2`

C

` 2n^(3) + 5n ^(2) +6n -1`

D

` 2n^(3) +8n^(2) +7n -2`

Text Solution

Verified by Experts

The correct Answer is:
D
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