Answer
No
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 $r \lt n$.
Algebra 1
by Hall, Prentice
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
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