A permutation is an arrangement of objects in which order matters.
What Is Permutation?
A permutation is an arrangement of objects in which order matters.
Examples of Permutation
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The permutations of A,B are AB and BA.Formula and Key Points
Formula / rule
P(n,r)=n!/(n−r)!
- Know the definition and standard notation for Permutation.
- Be able to recognise or compute permutation in a small example.
- Connect the concept to nearby topics in the same subject before using it in larger CSE problems.
Why This Matters in Computer Science
Used in algorithm proofs, counting, recurrence analysis, data structures and theoretical computer science. Used in search spaces, scheduling and brute-force algorithms where order matters.
Related Math Terms
Permutation: Frequently Asked Questions
What is Permutation?
A permutation is an arrangement of objects in which order matters.
Why is Permutation useful in computer science?
Used in algorithm proofs, counting, recurrence analysis, data structures and theoretical computer science. Used in search spaces, scheduling and brute-force algorithms where order matters.