Posted by Happy Face on Thursday, June 4, 2009 at 9:21pm.
A three digit number is created using the digits 4, 5, and 6. Each digit may only be used once. What is the probability that the three digit number will be less than 550?
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Math  Reiny, Thursday, June 4, 2009 at 9:30pm
since there are only 6 possibilities, lets list them
456, 465, 546, 564, 645, 654
how many of these are less than 550 ?
so ....
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