Back ሥነ ጥምረት AM تحليل توافيقي Arabic Combinatoria AST Kombinatorika AZ Kuombėnatuorėka BAT-SMG Камбінаторыка BE Камбінаторыка BE-X-OLD Комбинаторика Bulgarian গুচ্ছ-বিন্যাসতত্ত্ব Bengali/Bangla Kombinatorika BS
Combinatorics is a branch of mathematics. It is concerned with finite or countable infinite sets. Combinatorics is part of discrete mathematics. Combinatorics are about graph theory, or Partitions of sets. According to George Pólya, combinatorics looks at counting the number of possibilities, and about the questions whether certain configurations exist, and how to get to them.