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

  • question_answer
    If the coefficient of \[(2r+1)th\] term and \[(r+2)th\] term in the expansion of \[{{(1+x)}^{43}}\] are equal, then r is equal to

    A)  12                               

    B)  14           

    C)  16                   

    D)  18

    Correct Answer: B

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