#### 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.

Published by
Brooks Cole

ISBN 10:
1305115546

ISBN 13:
978-1-30511-554-5

$15$ ways

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