JEE Main & Advanced Mathematics Permutations and Combinations Question Bank Definition of combinations, Conditional combinations, Division into groups, Derangements

  • question_answer
    If \[n\] is even and the value of  \[^{n}{{C}_{r}}\] is maximum, then \[r=\]

    A) \[\frac{n}{2}\]

    B) \[\frac{n+1}{2}\]

    C) \[\frac{n-1}{2}\]

    D) None of these

    Correct Answer: A

    Solution :

    It is obvious.


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