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Thread: Permutation & Combination

  1. #1
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    Permutation & Combination

    (a) 5 trucks should carry 50 boxes, but only 2 trucks are available. In how many different ways boxes can be chosen to fit in 2 trucks:

    - Order of boxes is important
    - Order of boxes is irrelevant

    (b) How many different arrangements are there of the letters of the word FLOWER which end in a vowel?

    ----------------------------------------------

    My attempt for (a)

    50/5 = 10, so each truck can carry 10 boxes

    Order Important: 50P20

    Order Irrelevant: 50C20

    ---------------------------------------------

    My attempt for (b)

    there are 6 letters
    _ _ _ _ _ _

    there are 2 vowels and they must appear at the end (they can appear in two different ways)

    _ _ _ _ _ 2

    there are 4 constants and they have no restrictions

    5 x 4 x 3 x 2 x 1 x 2
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  2. #2
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    Re: Permutation & Combination

    Your answers are correct
    Thanks from joshuaa
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  3. #3
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    Re: Permutation & Combination

    Thanks a Lot.
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