## College Algebra 7th Edition

Published by Brooks Cole

# 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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