Concept of finding no of arrangements in necklace and garland cases

Asked by  | 12th Sep, 2009, 08:16: PM

Expert Answer:

these are the cases of circular permutations

There are two cases of circular-permutations:-

(a)       If clockwise and anti clock-wise orders are different, then total number of circular-permutations is given by (n-1)!

(b)       If clock-wise and anti-clock-wise orders are taken as not different, then total number of circular-permutations is given by  (n-1)!/2!

In case of beads  clock-wise and anti-clockwise arrangement s are same.

Answered by  | 5th Oct, 2009, 12:21: PM

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