SOLUTION: area codes are 3 digits. how many are possible if repition is not allowed?

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Question 849626: area codes are 3 digits. how many are possible if repition is not allowed?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

repetition is not allowed

0 CANNOT BE FIRST

9*9*8