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 437: 21

Answer

$120$

Work Step by Step

The number of five-letter sequences that use letters b,o,g,e,y once each is $5!=5*4*3*2*1=120$ (Because first we choose the first letter, that is 5 choices, then the second, that is four choices because it can't be the first letter, then we choose the third letter...)
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