a. How many integers from 1 through 999 do not have any

Chapter 9, Problem 3E

(choose chapter or problem)

Problem 3E

a. How many integers from 1 through 999 do not have any repeated digits?

b. How many integers from 1 through 999 have at least one repeated digit?

c. What is the probability that an integer chosen at random from 1 through 999 has at least one repeated digit?

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