SOLUTION: a comapny wants an 8 digit phone number, how many combinations can it have if the first number isn't 0

SOLUTION: a comapny wants an 8 digit phone number, how many combinations can it have if the first number isn't 0

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Question 301644: a comapny wants an 8 digit phone number, how many combinations can it have if the first number isn't 0
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
XXXX-XXXX
Each number can vary from to ( total) except the first number which can vary from to ( total).
=90,000,000 total combinations
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