Answer
30
Work Step by Step
$_nP_r = \frac{n!}{(n-r)!}$
$_6P_2 = \frac{6!}{(6-2)!}$
$\frac{6!}{4!}$
We also know that:
$x! = x(x-1)(x-2)...(1)$
Thus, we have:
6*5
30
Geometry: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281159
ISBN 13:
978-0-13328-115-6
Chapter 13 - Probability - 13-3 Permutations and Combinations - Lesson Check - Page 840: 3
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