College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter 9, Counting and Probability - Section 9.1 - Counting - 9.1 Exercises - Page 658: 58

Answer

$$420$$

Work Step by Step

We first choose the person who sleeps in the car. That can be chosen 7 ways. Then the person in the single room can be chosen 6 ways. The people in the double room can be chosen$5*4/2$ ways.The others sleep in the triple room. Thus the answer is $7*6*10 = 420$
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