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JEE Main & Advanced Mathematics Functions Question Bank Self Evaluation Test - Relation and Functions-II

  • question_answer
    Let \[n(A)=4\] and \[n(B)=6.\] The number of one to one functions from A to B is

    A) 24

    B) 60

    C) 120

    D) 360

    Correct Answer: D

    Solution :

    [d] Required number of one to one functions \[{{=}^{6}}{{P}_{4}}\] \[=6\times 5\times 4\times 3=360\]


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