SOLUTION: 12 differently coloured beads are arranged around a necklace. How many different arrangements are possible?
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Question 1147096: 12 differently coloured beads are arranged around a necklace. How many different arrangements are possible? Answer by ikleyn(52776) (Show Source):
This problem is about circular permutations.
The number of distinguishable circular permutations of "n" items is (n-1)!.
In this case the answer is (12-1)! = 11! = 11*10*9*8*7*6*5*4*3*2 = 39916800.
