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JEEMAIN and NEET
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Mathematics
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Class11
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Bionomial Theorem and Simple Applications
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In the expansion of $(1+x)^m.(1-x)^n, $ the coefficients of $x$ and $x^2$ are $3$ and $-6$ respectively, then $m=?$
$\begin{array}{1 1} 6 \\ 9 \\ 12 \\ 24 \end{array} $
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