Sum to p terms of the series $1^{2} + (1^{2} + 3^{2}) + (1^{2} + 3^{2} + 5^{2}) + . . . .$ is

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none of these

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Solution

The correct option is C

At p=2, sum = 1+10 =11

Put p=2 in answer options

Only Option c gives 11

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