
Kendra F. answered 05/04/17
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five digit code; each code is 3 digits (0-9) followed by two letters. That's ten numbers to choose from and 26 letters in the alphabet.
The problem suggests numbers and letters can be used more than once, like having a code: 555AA
To find the number of possible codes, you multiply by the choices for each digit.
10*10*10*26*26 = 676,000