## Number of permutations

**How many permutations are there?**

**n!**

Do you like Algebra? If the answer is yes, you obviously know that the number of permutations of n distinct objects is n factorial usually written as “*n*!”. Not too many people know that the study of permutations of finite sets is a topic in the field of combinatorics. This means the product of all positive integers less than or equal to *n*. It is interesting to know the fact that the notion of permutation relates to the act of permuting, or rearranging members of a set into a particular sequence or order.

This fact is verified on : July 7, 2014.