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Home > GC > Chapter 4 > Lesson 4.2.2 > Problem 4-64

4-64.

Alexis, Bart, Chuck, and Dariah all called in to a radio show to get free tickets to a concert. List all the possible orders in which their calls could have been received.

Think of all the combinations if Alexis had called first.
What if Bart had called first? Do this for each one of the callers.

Your list should include combinations.