Answer
No. of horses = 12
Probability that the three horses owned by one person finish first, second, and third = 3P3 / 12P3 = 3! 9! / 12! = 1/220 = 0.005
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 - Section 3.4 Additional Topics in Probability and Counting - Exercises - Page 176: 41
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