College Algebra 7th Edition

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: 53

Answer

$15$ ways

Work Step by Step

There are 6 total marbles, and there are two groups of indistinguishable colors (the groups have 4 and 2 marbles). Therefore, the amount of ways the marbles can be arranged is $\frac{6!}{4!\times 2!}=15$ ways.
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