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Questions  >>  Olympiad-Math  >>  Class 10
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Q)

The common difference of an A.P. whose sum of $n$ terms is $xm^2+ym$ is ________

$\begin{array}{1 1}(A) \; 2\\(B)\;2x \\(C)\;2y \\(D)\;\text{None of the above}\end{array}$

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