Counting Principles - Combinations and Permutations

Mathematics
Tutor: None Selected Time limit: 1 Day

How many nine-digit student identification numbers can be created from letters and numbers if the first four characters must be upper case letters from A to D and the last five must be digits from 0 to 9? Repetition of letters and numbers is not allowed.

May 21st, 2015

3.62E6 :)

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May 21st, 2015

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May 21st, 2015
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