Back to 13.7 Probability

13.7 Exercise 66

Avg difficulty 2.5

Use the following scenario for the exercises that follow: In the game of Keno, a player starts by selecting 20 20 numbers from the numbers 1 1 to 80. 80. After the player makes his selections, 20 20 winning numbers are randomly selected from numbers 1 1 to 80. 80. A win occurs if the player has correctly selected 3,4, 3 , 4 , or 5 5 of the 20 20 winning numbers. (Round all answers to the nearest hundredth of a percent.)

What is the percent chance that a player selects exactly 3 winning numbers?

OpenStax Algebra and Trigonometry 2e, 13.7 Probability, exercise 66

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Adapted from College Algebra © 2021 Rice University. Licensed under CC BY 4.0. Sources: College Algebra 2e, Algebra and Trigonometry 2e, Precalculus 2e, College Algebra with Corequisite Support 2e. Imported at revision 4922e46.