A telephone number consists of 10 digits: 3 digit area code followed by 7 digit number. How many different telephone numbers are possible if neither the first digit of the area code nor the first digit of the number itself can be 0?
A telephone number consists of 10 digits: 3 digit area code followed by 7 digit number. How many different telephone numbers are possible if neither the first digit of the area code nor the first digit of the number itself can be 0?
Chapter9: Sequences, Probability And Counting Theory
Section: Chapter Questions
Problem 12PT: A community baseball stadium has 10 seats in the first row, 13 seats in the second row, 16 seats in...
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A telephone number consists of 10 digits: 3 digit area code followed by 7 digit number. How many different telephone numbers are possible if neither the first digit of the area code nor the first digit of the number itself can be 0?
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