SOLUTION: the number of three digit numbers using 1,2,3,4,5 if no digit is to be used more than once in each number is

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Question 743481: the number of three digit numbers using 1,2,3,4,5 if no digit is to be used more than once in each number is
Answer by jim_thompson5910(35256) About Me  (Show Source):
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There are 5 choices for the first slot

4 choices for the second (you can't reuse one digit, so you have 5-1 = 4 left)

and 3 choices for the third slot

So there are 5*4*3 = 60 different 3 digit numbers to form (using 1, 2, 3, 4, 5 only)