Mathematics, 03.11.2020 14:00 sarah19Nursing

Area codes have three digits. The first digit must not be 0 or 1, the middle digit must be 0 or 1, and the last digit must not be 0. How many different area codes are possible?

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Area codes have three digits. The first digit must not be 0 or 1, the middle digit must be 0 or 1, a...