This document discusses circular permutations and how to calculate the number of possible arrangements of objects arranged in a circular manner. It begins by defining a circular permutation as the arrangement of objects around in a circular fashion. It then provides the formula to calculate the number of circular permutations of n different objects as P=(n-1)!. Several examples are given to demonstrate how to use the formula to solve problems involving arranging people, keys, beads or other objects in a circular configuration.