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In your own words compare and contrast Permutations and Combinations. When doyou use each? Give an example of each.

In your own words compare and contrast Permutations and Combinations. When doyou use-example-1
User Oswaldo Alvarez
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1 Answer

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Permutation relates to the act of arranging all the members of a set into some sequence or order. Combination is a way of selecting items from a collection, such that (unlike permutations) the order of selection does not matter.

The formulas to calculate the permutation of choosing r things from a set of n things is given to be:


_(n) P_(r)=(n !)/((n-r) !)

The formula for calculating the combination choice of r things from a set of n things without replacement and where order does not matter is given to be:


_n C_r=(n !)/(r ! (n-r) !)

An example of permutation is arranging people, digits, numbers, alphabets, letters, and colors. An example of combination is the selection of menu, food, clothes, subjects, and team.

User Yazabara
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