Answer
Classes at 8:00 AM = 7
Classes at 9:00 AM = 4
Classes at 10:00 AM = 3
Possible arrangements = 7C1 x 4C1 x 3C1
= 7 x 4 x 3
= 84
Work Step by Step
As given in answer
Elementary Statistics: Picturing the World (6th Edition)
by Larson, Ron; Farber, Betsy
Published by
Pearson
ISBN 10:
0321911210
ISBN 13:
978-0-32191-121-6
Chapter 3 - Probability - Review Exercises - Page 180: 5
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