Answer
120
Work Step by Step
We are choosing 7 elements out of 10.
$$C(10,7) = 10!/((10-7)!*7!) = 10!/(3!*7!)=10*9*8/6 = 12*10 =\boxed{120}$$
College Algebra 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305115546
ISBN 13:
978-1-30511-554-5
Chapter 9, Counting and Probability - Section 9.1 - Counting - 9.1 Exercises - Page 658: 67
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