1. The problem statement, all variables and given/known data How many necklace with 5 white beads and 5 black beads can be constructed? 2. Relevant equations Circular Permutation problem 3. The attempt at a solution] I did 10!/5!5!=252 but from there I didn't get anywhere. I know this includes repeats from rotational symmetry and reflections. but i am not really sure how to get rid of these. i try dividing by 10 but it gives 25.2, which does not make sense to me.