The Value of $31^{2}$ is equal to

981

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961

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991

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1001

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Solution

The correct option is B
961

$31^{2}$ can be written as $30^{2}$ + (30 +31) [ ( $n + 1)^{2} = n^{2} + (n) + (n + 1)$ ]

= 900 + 30 + 31

= 961

Suggest Corrections

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