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Math Help - Permutations

  1. #1
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    Permutations

    How many arrangements in the word NUMBER begin and end with a vowel ??

    Please Help
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  2. #2
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    Here are two ENMBRU~\&~UNMBRE.
    Now count the middle four of each of those two.
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  3. #3
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    and if there were 720 arrangements of the word NUMBER, how many of the arrangements be beginning and ending with a vowel ?

    would it be like, there are 4 non vowel words, which could be arranged in 4!= 24 different ways, and there are 2 vowel words which could be arranged in 2!= 2 different ways. So, 24 X 2 = 48.... Am I correct ???
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  4. #4
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    Quote Originally Posted by creatively12 View Post
    there are 4 non vowel words, which could be arranged in 4!= 24 different ways, and there are 2 vowel words which could be arranged in 2!= 2 different ways. So, 24 X 2 = 48.... Am I correct ???
    Yes you are correct.
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  5. #5
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    thanks for your help, I really appreciate it.........
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