College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter 9, Counting and Probability - Section 9.1 - Counting - 9.1 Exercises - Page 659: 91

Answer

To find the total amount of distinct initials, we can multiply $26 \times26$ to get 676. Therefore, in a group of 677 people, there has to be at least 1 repeat since there are only 676 sets of distinct initials.

Work Step by Step

To find the total amount of distinct initials, we can multiply $26 \times26$ to get 676. Therefore, in a group of 677 people, there has to be at least 1 repeat since there are only 676 sets of distinct initials.
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