Answer
$1$
Work Step by Step
RECALL:
By the definition of factorial (refer to page 298 of this book),
$1!=1$.
Thus,
$1!=1$.
Statistics: Informed Decisions Using Data (4th Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0321757270
ISBN 13:
978-0-32175-727-2
Chapter 5 - Section 5.5 - Assess Your Understanding - Vocabulary and Skill Building - Page 305: 10
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