2. Sample Papers
  3. 11th Class
  4. Mathematics

11th Class Mathematics Sample Paper Maths Olympiad Model Paper-6

  • question_answer
    \[{}^{n}{{C}_{r-1}}=36,\] \[^{n}{{C}_{r}}=84\] and \[^{n}{{C}_{r+1}}=126,\] then r is:

    A)  1                                

    B)  2

    C)  3        

    D)  4

    E)  None of these

    Correct Answer: C

    Solution :

     Not Available               


You need to login to perform this action.
You will be redirected in 3 sec spinner