Suppose there are 120 students in a veterinary school. There are 49 students that have a dog, 56 students with a cat, and 18 students with a bird for a pet. 30 students have only a dog, 40 have only a cat, and 10 have only a bird. In addition, 15 students have both a dog and a cat. How many students have a dog, a cat, and a bird? No pets?

College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
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Chapter9: Sequences, Probability And Counting Theory
Section: Chapter Questions
Problem 36RE: In a group of 5 freshman, 10 sophomores, 3 juniors, and 2 seniors, how many ways can a president,...
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Suppose there are 120 students in a veterinary school. There are 49 students that have a dog, 56 students with a cat, and 18 students with a bird for a pet. 30 students have only a dog, 40 have only a cat, and 10 have only a bird. In addition, 15 students have both a dog and a cat. How many students have a dog, a cat, and a bird? No pets?

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