Combinatorics
Combinatorics is an area of mathematics primarily concerned with counting, both as a means and as an end to obtaining results, and certain properties of finite structures. Wikipedia
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Combinatorics is the branch of mathematics studying the enumeration, combination, and permutation of sets of elements and the mathematical relations that ...
Combinatorics. Counting problems can be approached from the basic building blocks described in the first section: Counting. However some counting problems ...
Combinatorics is often described briefly as being about counting, and indeed counting is a large part of combinatorics. As the name suggests, however, it is ...
the branch of mathematics concerned with the theory of enumeration, or combinations and permutations, in order to solve problems about the possibility of ...