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Security code combinations

  1. Jul 11, 2004 #1
    i was wondering how to calculate the posibilities that a security code could be. For instance if a jet ski security code consists of 4 numbers. each digit can be any number 1 through 5.

    how many combinations can that make?
    p.s. - im not trying to steal a jet ski; im just wondering.
  2. jcsd
  3. Jul 11, 2004 #2
    Apply the multiplication rule. You have 5 choices for each digit in the code, and there are 4 digits. There are 5*5*5*5 = 5^4 = 625 possibilities.
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