What concept is involved when the letters of the word “FAIR” taken 4 at a time equals 24?

In how many ways the letters of the word “RUNNING” be arranged?

There are four identical green flags, two identical white flags, and two identical red flags. Using all eight flags, how many signals can be made?

Distinct or Distinguishable permutations deal with the order of objects arranged in a circular manner.

A Mathematical technique that determines the number of possible arrangements in a collection of items where the order of the selection does not matter