# Yet another permutation problem

There is a square table and 2 persons are sitting on each side of it so there are 8 persons in total ... how many total number of permutation is possible?

Does circular permutation rules applies here?

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Why wouldn't it? –  Kopper Mar 2 '11 at 16:06
@ Jay Kopper:Thanks :-) –  VelvetThunder Mar 2 '11 at 16:08
Well, they sort of do: rotation by 1 person results in a different seating arrangement, so only rotations by an even displacement corresponds to the "same" seating. –  Arturo Magidin Mar 2 '11 at 16:59