ehrenfest Messages 2,001 Reaction score 1 Thread starter Oct 31, 2007 #1 Homework Statement How many ways can you put n points on a circle? It is something like n!/2, right? Homework Equations The Attempt at a Solution
Homework Statement How many ways can you put n points on a circle? It is something like n!/2, right? Homework Equations The Attempt at a Solution
Dick Science Advisor Homework Helper Messages 26,254 Reaction score 623 Oct 31, 2007 #2 No, it's n!/n. You have to identify cyclic permutations of a linear ordering. With an extra factor of 1/2 if you allow the circle to flip over.
No, it's n!/n. You have to identify cyclic permutations of a linear ordering. With an extra factor of 1/2 if you allow the circle to flip over.