Question
How many signals can be made by arranging 15 flags in a line if 4 are red, 6 are yellow, and 5 are blue?
Step 1
This can be done using the formula for permutations of a multiset, which is given by the total factorial divided by the product of the factorials of each group. In this case, the total is 15 (the total number of flags), and the groups are the red, yellow, and blue Show more…
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Transcript
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