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?
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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):