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Q.

Find the number of ways of preparing a chain with 6 different coloured beads. 

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answer is 1.

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Detailed Solution

We know that the number of circular permutations of hanging type that can be formed using n things is n1!2

Here the number of different ways of preparing the chain with n = 6

different coloured beads is61!2=5!2=1202=60

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