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  3. 11th Class
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11th Class Mathematics Sample Paper Maths Olympiad Model Paper-9

  • question_answer
    If \[^{43}{{C}_{r-6}}={{\,}^{43}}{{C}_{3r+1}},\] then the value of r is

    A)  6                                

    B)  8

    C)  10                               

    D)  12

    E)  None of these

    Correct Answer: D

    Solution :

     Not Available


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