Mathematics, 13.12.2019 18:31 mf7252001
In a plan for area codes, the first digit could be any number from 44 through 99, the second digit was either 0 or 44, and the third digit could be any number except 0.
with this plan, how many different area codes were possible?
Answers: 1
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In a plan for area codes, the first digit could be any number from 44 through 99, the second digit w...
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