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Math Help - Is this a permutation?

  1. #1
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    Is this a permutation?

    John has forgotten his password to log on his computer. He knows the password is made up of 5 letters in the word "speed". What is the maximum number of passwords Greg has to check to find the right one?

    24
    60
    120
    240

    is 5! or 5!/2! ??
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  2. #2
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    Because of the two e's it is \dfrac{5!}{2}
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