Answered: 7. Of a group of 40 people, 15 prefer…

7. Of a group of 40 people, 15 prefer product A, 10 prefer B, 5 prefer A and B only and 7 prefer A and C only, 4 B and C only. What is the number of people who prefer only A? (Everyone prefers one)

College Algebra

1st Edition

ISBN:9781938168383

Author:Jay Abramson

Publisher:Jay Abramson

Chapter9: Sequences, Probability And Counting Theory

Section9.5: Counting Principles

Problem 42SE: In horse racing, a “trifecta” occurs when a bettor wins by selecting the first three finishers in...

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7. Of a group of 40 people, 15 prefer product A, 10 prefer B, 5 prefer A and B only and 7 prefer A and C only, 4 B and C only. What is the number of people who prefer only A? (Everyone prefers one)

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