noun
- the branch of mathematics dealing with combinations, arrangements, and counting of sets of elements
Usage: mathematics; typically used as singular
Examples
- Combinatorics is essential for understanding probability theory.
- The student struggled with combinatorics problems involving permutations.
- Modern cryptography relies heavily on principles from combinatorics.
- Her research in combinatorics focused on graph theory applications.
- The textbook covered basic combinatorics including the binomial theorem.
- Combinatorics helps solve problems about arranging objects in different ways.