Question 1132270: In a different plan for area codes, the first digit could be any number from 1 through 7, the second digit was either 1 or 2, and the third digit could be any number except 3, 6 or 7. With this plan, how many different area codes are possible?
Found 3 solutions by Fombitz, Alan3354, MathTherapy:
Answer by Fombitz(32388)   (Show Source):
Answer by Alan3354(69443)  (Show Source):
Answer by MathTherapy(10552)  (Show Source):
You can put this solution on YOUR website! In a different plan for area codes, the first digit could be any number from 1 through 7, the second digit was either 1 or 2, and the third digit could be any number except 3, 6 or 7. With this plan, how many different area codes are possible?
7(2)(7)
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