Let \({S_k} = \frac{{1 + 2 + 3 + \ldots + k}}{k}.{\rm{\;If\;}}S_1^2 + S_2^2 + \ldots + S_{10}^2 = \frac{5}{{12}}A\), then A is equal to

Let \({S_k} = \frac{{1 + 2 + 3 + \ldots + k}}{k}.{\rm{\;If\;}}S_1^2 +

1.	Let \({S_k} = \frac{{1 + 2 + 3 + \ldots + k}}{k}.{\rm{\;If\;}}S_1^2 + S_2^2 + \ldots + S_{10}^2 = \frac{5}{{12}}A\), then A is equal to
A.	156
B.	301
C.	283
D.	303
Answer» E.

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Let \({S_k} = \frac{{1 + 2 + 3 + \ldots + k}}{k}.{\rm{\;If\;}}S_1^2 + S_2^2 + \ldots + S_{10}^2 = \frac{5}{{12}}A\), then A is equal to

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