Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 12 - Data Analysis and Probability - 12-6 Permutations and Combinations - Lesson Check: 3

Answer

120

Work Step by Step

We know that: $_nP_r = \frac{n!}{(n-r)!}$ This gives $_6P_3 = \frac{6!}{(6-3)!}$ $\frac{6*5*4*3*2*1}{3*2*1}$ $6*5*4$ 120
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