Answer
$_4C_2=6$
Work Step by Step
Fourth row of Pascal's triangle: $1~~4~~6~~4~~1$
It corresponds to: $_4C_0~~_4C_1~~_4C_2~~_4C_3~~_4C_4$
So, $_4C_2=6$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 11 - 11.5 - The Binomial Theorem - 11.5 Exercises - Page 813: 14
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