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11th Class Mathematics Sample Paper Maths Olympiad Model Paper-3

  • question_answer
    If the coefficient of \[{{r}^{th}}\]term and \[{{(r+4)}^{th}}\]term are equal in the expansion of \[{{(1+x)}^{20}},\] then the value of r will be

    A)  7                                

    B)  8

    C)  9        

    D)  10

    E)  None of these

    Correct Answer: C

    Solution :

     Not Available               


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