If 1 2 + 2 2 + 3 2 + ... + x 2 =\frac{x(x + 1)(2x + 1)}{6} , then 1 2 + 3 2 + 5 2 + ... + 19 2 =

TS Police SI Mains 2016 Solved Paper 3

Question : 80 of 200

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If 1² + 2² + 3² + ... + x² =

\;{x(x\;+\;1)(2x\;+\;1)}/{6}

, then 1² + 3² + 5² + ... + 19² =

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