SOLUTION: If no digit may be used more than once, how many 3-digit numbers can be formed using only the digits 6,8,1,4,5,and 9?

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Question 973999: If no digit may be used more than once, how many 3-digit numbers can be formed using only the digits 6,8,1,4,5,and 9?
Answer by Alan3354(69443) About Me  (Show Source):
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If no digit may be used more than once, how many 3-digit numbers can be formed using only the digits 6,8,1,4,5,and 9?
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6 different numbers.
The 1st choice is 1 of 6
then 1 of 5, then 1 of 4
--> 6*5*4
= 120 numbers