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If the sum of first n terms of an A.P. i...

If the sum of first n terms of an A.P. is `cn^(2) `, then the sum of squares of these n terms is `:`

A

`( n ( 4n^(2) - 1) c^(2))/( 6)`

B

`( n ( 4n^(2) + 1) c^(2))/( 3)`

C

`( n ( 4n^(2) - 1) c^(2))/( 3)`

D

`( n ( 4n^(2) + 1) c^(2))/( 6)`

Text Solution

Verified by Experts

The correct Answer is:
C
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MODERN PUBLICATION-SEQUENCES AND SERIES -MCQ ( Level-II)
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