#### Answer

36

#### Work Step by Step

$9$C$7$ is equivalent with following expression:
$\binom{9}{7} =\frac{9!}{7!\times (9-7)!}=\frac{7!\times8\times9}{7!\times2!}=\frac{8\times9}{2\times1}=36$

Published by
Pearson

ISBN 10:
013421742X

ISBN 13:
978-0-13421-742-0

36

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