Finite Math and Applied Calculus (6th Edition)

Published by Brooks Cole
ISBN 10: 1133607705
ISBN 13: 978-1-13360-770-0

Chapter 6 - Section 6.4 - Permutations and Combinations - Exercises - Page 439: 67b

Answer

$18!$

Work Step by Step

The answer is $18!$ because the first 5 stops have already been determined, and we decide where we're going next (18 choices because we've already visited five cities), then we decide where we're going next(17 choices)...
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