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Until 1995, the rules for three-digit area codes in the United States were as follows:...

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Until 1995, the rules for three-digit area codes in the United States were as follows: The first digit could not be 0 or 1. The second digit had to be 0 or 1. The third digit had no such restrictions.In 1995, the restriction on the second digit of area codes was removed. How many area codes are possible after the restriction is removed?area codes(Type a whole number.)

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