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[" Let n quantities be in A.P.,d being t...

[" Let n quantities be in A.P.,d being the common difference.Let the arithmetic mean of the squares of "],[" these quantities exceed the square of the arithmetic mean of these quantities by a quantity p.Then p "],[[" (A) is always negative "," (B) "" equals "(n^(2)-1)/(12)d^(2)," (C) equals "(d^(2))/(12)," (D) equals "(n^(2)-1)/(12)]]

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