PERMUT()
PERMUT(int $numObjs, int $numInSet) : int|string
PERMUT.
Returns the number of permutations for a given number of objects that can be selected from number objects. A permutation is any set or subset of objects or events where internal order is significant. Permutations are different from combinations, for which the internal order is not significant. Use this function for lottery-style probability calculations.
Parameters
| int | $numObjs | Number of different objects |
| int | $numInSet | Number of objects in each permutation |
Returns
int|string —Number of permutations, or a string containing an error