ELPERKYM30 ELPERKYM30
  • 02-06-2022
  • Mathematics
contestada

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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