SOLUTION: how many 3-digit area codes are there for a telephone company if the first digit must not be 0 or 1 and the second digit must be 0 or 1?
Algebra.Com
Question 948184: how many 3-digit area codes are there for a telephone company if the first digit must not be 0 or 1 and the second digit must be 0 or 1?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
So for the first numbers there are only 8 choices, second number only two choices.
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