eléphone numbers in the United States begin with 3 digit area codes followed by 7 digit local teléphone numbers. Area odes and local telephone numbers cannot begin with 0 or 1. How many telephone numbers are possible?
eléphone numbers in the United States begin with 3 digit area codes followed by 7 digit local teléphone numbers. Area odes and local telephone numbers cannot begin with 0 or 1. How many telephone numbers are possible?
Chapter8: Sequences, Series,and Probability
Section8.6: Counting Principles
Problem 21E: License Plate Numbers In the state of Pennsylvania, each standard automobile license plate number...
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