Homework Help: Math/ Probability

Posted by Felica on Wednesday, May 19, 2010 at 7:26pm.

How many 4-character license plates are possible with 2
letters from the alphabet followed by 2 digits, if repetitions
are allowed? if repetitions are not allowed?

Math/ Probability - Jen, Wednesday, May 19, 2010 at 11:59pm
a) 26x26x10x10
b) 26x25x10x9

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