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- Permutation is a mathematical concept that deals with the number of different arrangements or orderings of n objects. It is a fundamental part of combinatorics, which is the study of finite or countable discrete structures. Permutations are useful in many fields such as mathematics, computer science, and engineering.
- Permutations can be used to determine the number of ways in which n objects can be arranged in a set. For example, if there are three objects A, B and C, then there are six possible permutations: ABC, ACB, BAC, BCA, CAB and CBA. This makes permutation an important tool for solving various problems related to counting and probability.