Asked by Sara

How many ways can 9 keys be arranged on a circular key ring?
Answered by Reiny
place 1 key as a marker, the rest of the keys can then be arranged in 8! ways,
so 40320 ways

question remaining, ...
does a 180 degree rotation of the key ring constitute a new ring?
There are no AI answers yet. The ability to request AI answers is coming soon!