Use the Fundamental Counting Principle to solve Exercises 29-40. In the original plan
Chapter 8, Problem 35(choose chapter or problem)
Use the Fundamental Counting Principle to solve Exercises 29-40. In the original plan for area codes in 1945, the first digit could be any number from 2 through 9, the second digit was either 0 or 1, and the third digit could be any number except 0. With this plan, how many different area codes were possible?
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