Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 12 - Data Analysis and Probability - Chapter Test - Page 779: 22



Work Step by Step

Let $r=4, n=3$ Then, by definition of combination, we have the following: $3C4 = 3!/4!(3-4)!$ $3C4 = 6/24(-1)!$ We can't have a negative factorial, so $r \lt n$.
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