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 657: 50

Answer

657720

Work Step by Step

We know that this is a permutation problem because order matters because each office is distinct. We need to permute 4 out of the 30 students... Using our permutation formula, $$P(30,4) = 30!/26! = 657720 $$
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