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5 July, 20:13

A 7 character computer password is made up of 4 letters followed by 3 numbers. How many different passwords are possible?

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  1. 5 July, 23:06
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    Answer: 456,976,000

    Explanation: For 7 character computer password to be made for

    4 letters and 3 numbers.

    Total Number of Alphabets =

    26letters

    Numbers ranges from 0-9

    Therefore the possible passwords

    = 26*26*26*26*10*10*10

    =456,976,000
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