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11th Class Mathematics Sample Paper Mathematics Olympiad - Sample Paper-9

  • question_answer
    If in the expansion of \[{{(1+x\text{ )}}^{m\,}}{{(1-x)}^{n}}\],the coefficient of \[x\]and \[{{x}^{2}}\]are 3 and - 6 respectively, then m is

    A)  6                    

    B)  9            

    C)  12                   

    D)  24

    Correct Answer: C

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