College Algebra (10th Edition)

Published by Pearson
ISBN 10: 0321979478
ISBN 13: 978-0-32197-947-6

Chapter 10 - Section 10.2 - Permutations and Combinations - 10.2 Assess Your Understanding - Page 695: 40



Work Step by Step

The number of arrangements of $n$ objects in $r$ slots where each slot can be any one of these objects is $n^{r}$. Number of company names represented by 4 letter $26^{4}=456,976$ Number of company names represented by 5 letter $26^{5}=11,881,376$ Total: $456,976 + 11,881,376 = 12,338,352$
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