CBSE Class 11-science Answered
Concept of finding no of arrangements in necklace and garland cases
Asked by | 12 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 | 05 Oct, 2009, 12:21: PM
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