Mathematics, 16.12.2021 04:20 oliviaciscooc

Phone A telephone number consists of a three-digit area code followed by a seven-digt local code
Neither the area code nor the local code may have a first digit of 0 or 1. If the codes 800,888,
877 and 866 are toll-free codes and are not used as area codes, how many ten-digit telephone
numbers are possible? Express your answer in scientific notation with four significant digits.

Answers: 3

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Phone A telephone number consists of a three-digit area code followed by a seven-digt local code