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specialty journal of engineering and applied science
Volume 4, 2019, Issue 3
Equations in Permutation and Combinations with Introduction of the Anekwe's Method of Swapping Factorials
Uchenna Okwudili Anekwe
Pages: 69-76


Permutations and combinations is concerned with determining the number of different ways of arranging and selecting objects out of a given number of objects, without actually listing them. A permutation involves an arrangement of objects in a definite order while A Combinations On the other hand is not interested in arranging but only in selecting r objects from given n objects. A combination is a selection of some or all of a number of different objects where the order of selection is not important. In this Manuscript we are concerned about solving equations of permutation and combination, on how to determine n number of items and how it can be selected or arranged in r number of ways and also to introduce Anekwe’s method of swapping factorials in the case of determining r number of items.

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specialty journal of engineering and applied science
Issue 2, Volume 5, 2020