Circular permutations (distinct objects around a circle) (Fix rotation: arrangements of n distinct people around a circle = (n−1)!)
jee-mainjee-advanced
Fix rotation: arrangements of n distinct people around a circle = (n−1)!
What each symbol means
| Symbol | What it stands for |
|---|---|
| n | Number of distinct objects |
| (n−1)! | Count after quotienting rotations |
When to use this
n ≥ 1. For n=1, (n−1)! = 0! = 1.