Mathematics, 19.08.2021 07:20 RayQuan115

1. A seven-digit telephone number is of the form ABC- DEFG. In one particular state, the digit 'A' is restricted to
any number between 1 and 9. The digits B and C are
restricted to any number between 2 and 9. The digits
D, E, F, and G have no restriction. How many seven-
digit phone numbers are possible with these
restrictions?

Answers: 3

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1. A seven-digit telephone number is of the form ABC- DEFG. In one particular state, the digit 'A'...