SOLUTION: How many even four-digit numbers can you form from the digits 1, 2, 3, and 5 where no digit is used twice?

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Question 255801: How many even four-digit numbers can you form from the digits 1, 2, 3, and 5 where no digit is used twice?
Answer by solver91311(24713) About Me  (Show Source):
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Since the formed number has to be even, it must end in 2, so all you need is how many ways are there to arrange the the other three digits -- three ways to select the first one times two ways to select the second one times one way to select the 3rd one. All in all, 6.


John