Can someone help me understand this one? The problem is: Four beads-red,blue,yellow, and green-are arranged on a string to make a simple necklace as shown in the figure. How many arrangements are possible?(adsbygoogle = window.adsbygoogle || []).push({});

The answer in the book is 3, but I don't get it.

I thought it woud be a permutation because order does matter. So I assume that since there are 4 objects and 4 blanks to fill the permutation counting formula would be (4!)/(4-4)!

Therefore this would equal 4*3*2*1/1=24

The book says the answer is three...am I doing something wrong???

HELLLP :yuck:

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# Discrete math-counting permutation

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