Question

what is permutations and combinations?

Answer 1

Permutations and combinations, the various ways in which objects from a setmay be selected, generally without replacement, to form subsets. This selection of subsets is called a permutation when the order of selection is a factor, a combination when order is not a factor. By considering the ratio of the number of desired subsets to the number of all possible subsets for many games of chance in the 17th century, the French mathematicians Blaise Pascaland Pierre de Fermat gave impetus to the development of combinatorics and probability theory.

Answer 2

Answer:

Permutation means knowing the number of ways of rearranging objects/things.

Combination means knowing the number of ways of selecting objects/things.