ryanthien7694 ryanthien7694

10-06-2018
Mathematics

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Keith must choose a 3 letter password for a computer account. he can use any of the 26 upper case letters of the alphabet but he cannot reprqt repeat letters. how many passwords are possible

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sqdancefan sqdancefan

10-06-2018

The first letter can be any of 26.
The second letter can be any of the remaining 25.
The third letter can be any of the remaining 24.

26*25*24 = 15,600 passwords are possible

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