In Exercises 17-20, does the problem hwolve permutations or combinations Explain your
Chapter 8, Problem 17(choose chapter or problem)
In Exercises 17-20, does the problem hwolve permutations or combinations? Explain your answer. (It is not necessary to solve the problem.) A medical researcher needs 6 people to test the effectiveness of an experimental drug. If 13 people have volunteered for the test, in how many ways can 6 people be selected?
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