Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 1 - Problem Solving and Critical Thinking - 1.3 Problem Solving - Exercise Set 1.3: 45

Answer

Bob’s major is Psychology.

Work Step by Step

Bob lives in the middle dorm room. Therefore Jose lives on one side of Bob. Tony lives on the other side of Bob. We don’t need to know which side of Bob each of them live on. The Business major uses Bob’s new computer when Bob is in class —so Bob is not the business major. Jose and the Psychology major both have 8:00 classes. This means Jose is not the Psychology major. The Psychology major knocks on Jose’s wall to make sure he’s up for the 8:00 AM class. Since Bob lives in the middle, he is the only one who could knock on Jose’s wall. Therefore, Bob is the Psychology major.
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