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The sum of series 1+6+(9(1^(2)+2^(2)+...

The sum of series
`1+6+(9(1^(2)+2^(2)+3^(2)))/(7) + (12(1^(2)+2^(2)+3^(2)+4^(2)))/(9)+(15(1^(2)+2^(2)+...+5^(2)))/(11)+...` up to 15 terms is

A

7820

B

7830

C

7520

D

7510

Text Solution

Verified by Experts

The correct Answer is:
A
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