2. Sample Papers
  3. JEE Main & Advanced

JEE Main & Advanced Sample Paper JEE Main - Mock Test - 11

  • question_answer
    Number of arrangements of a, b, c and d in which neither a, b nor c, d come together is

    A) \[6\]                   

    B) \[8\]          

    C) \[12\]                     

    D) \[16\]

    Correct Answer: B

    Solution :

    [b] Required number of ways \[=4!-\] (No. of ways in which a and b are together) - (No. of ways in which c and d are together) + (No. of ways in which a and b are together and c and d are together) \[=4!-3!2!-3!2!+2!2!2!=8\]    


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