ELPERKYM30 ELPERKYM30

02-06-2022
Mathematics

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Which expression represents the number of possible permutations of n items taken r at a time?

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jimthompson5910 jimthompson5910

02-06-2022

Answer: [tex]\frac{n!}{(n-r)!}[/tex]

The exclamation marks indicate factorial.

For instance, 4! = 4*3*2*1 = 24. You start with the given number and multiply your way down to 1.

For more information, check out the nPr permutation formula.

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