Finite Math and Applied Calculus (6th Edition)

Published by Brooks Cole
ISBN 10: 1133607705
ISBN 13: 978-1-13360-770-0

Chapter 6 - Section 6.4 - Permutations and Combinations - Exercises - Page 437: 33

Answer

$35$

Work Step by Step

There are 10 marbles in the big bag. Of these, 7 are not red. We simply need to find the number of ways of choosing 4 marbles out of 7. That is $C(7,4)=35$ Therefore there are 35 sets of four marbles that include none of the red ones
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