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JEE Main & Advanced Mathematics Permutations and Combinations Question Bank Definition of permutation, Number of permutations with or without repetition, Conditional permutations

  • question_answer
    In a train five seats are vacant,  then how many ways can three passengers sit    [RPET 1985; MP PET 2003]

    A) 20

    B) 30

    C) 10

    D) 60

    Correct Answer: D

    Solution :

    Required number of ways\[={{\,}^{5}}{{P}_{3}}=60\].


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