#### Answer

210

#### Work Step by Step

We know the following equation for combinations:
$$nC_r = \frac{n!}{(n-r)!\cdot r!}$$
Thus, we find:
$$\frac{10!}{6!\left(10-6\right)!}\\ 210$$

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Published by
McDougal Littell

ISBN 10:
0618595414

ISBN 13:
978-0-61859-541-9

210

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