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Mathematics, 26.01.2021 02:50 angie249

In a different plan for area codes, the first digit could be any number from 2 through 7, the second digit was either 5, 6, 7, or 8, and the third digit could be any number except 0 or 3. With this plan, how many different area codes are possible?

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In a different plan for area codes, the first digit could be any number from 2 through 7, the second...
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