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Today, 07:39

A password consists of four different letters of the alphabet. How many different possible passwords are there?

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Answers (2)
  1. Today, 08:11
    0
    26 letter in alphabet

    several scenarios

    1. can repeat and only lowercase

    26^4 or 456976 ways

    2. can repeat and lower and uppercase

    26^4*2^4 or 7311616 ways

    3. cannot repeat and only lowercase

    26*25*24*23 or 358800 ways

    4. cannot repeat and lowercase and uppercase

    26*25*24*23*2^4 or 5740800 ways
  2. Today, 11:30
    0
    Six with two left over if I am not mistaking?
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