Circular Permutation with Clockwise and Anticlockwise Equivalence

Circular Permutation with Clockwise and Anticlockwise Equivalence

## Formula

If clockwise and anticlockwise arrangements are considered identical, the number of arrangements of $$n$$ distinct objects is:

$$\frac{(n-1)!}{2}$$

for:

$$n>2$$

## Usage

- Used when arrangements are made on a necklace, bracelet or similar object where reflection also gives the same arrangement.