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JEE Main & Advanced Mathematics Permutations and Combinations Question Bank Critical Thinking Questions

  • question_answer
    The total number of different combinations of one or more letters which can be made from the letters of the word 'MISSISSIPPI' is

    A) 150

    B) 148

    C) 149

    D) None of these

    Correct Answer: C

    Solution :

    Here we have \[1\ M,\ 4\ I,\ 4\ S\] and\[2P\]. Therefore total number of selections of one or more letters\[=(1+1)(4+1)(4+1)(2+1)-1=149\].


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