Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter 11 - Further Topics in Algebra - 11.4 The Binomial Theorem - 11.4 Exercises: 17

Answer

$45$

Work Step by Step

$\binom {10} 2 =\dfrac {10!}{2!\left( 10-2\right) !}=\dfrac {8!\times 9\times 10}{2!\times 8!}=\dfrac {9\times 10}{1\times 2}=45$
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