SOLUTION: How many numbers are there each of 3 different digits if the first digit cannot be zero?

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Question 944540: How many numbers are there each of 3 different digits if the first digit cannot be zero?
Answer by Edwin McCravy(20054) About Me  (Show Source):
You can put this solution on YOUR website!
Choose the first digit any of these 9 ways {1,2,3,4,5,6,7,8,9}  (Can't be 0)
Choose the second digit any of 9 remaining ways. (Can be 0) 
Choose the third digit any of 8 remaining ways.

9*9*8 = 648

Edwin