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

Algebra.Com
Question 849626: area codes are 3 digits. how many are possible if repition is not allowed?
Answer by ewatrrr(24785)   (Show Source): You can put this solution on YOUR website!
 
Hi,
repetition is not allowed
0 CANNOT BE FIRST
9*9*8
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