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  • 5 years ago

assume that a password to log on to a computer is 3 letters followed by 2 digits. Determine the number of possible passwords in case that repetation is permitted, and in case it's not primmitted

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  1. dumbcow
    • 5 years ago
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    with repetition: each letter has 26 possibilities each digit has 10 possibilities =26*26*26*10*10 without repetition: first letter 26 2nd letter now only 25 3rd letter only 24 1st digit has 10 choices 2nd digit only 9 =26*25*24*10*9

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