list of all possible combinations of 4 numbers 1-4

The total number of all possible combinations of 4 numbers from 1 to 4, where order matters and digits are not repeated, is 24. These are the permutations of the set {1,2,3,4}, equivalent to 4! (4 factorial), which equals 24. Here is the complete list of all 24 possible combinations (permutations): 1234, 1243, 1324, 1342, 1423, 1432,
2134, 2143, 2314, 2341, 2413, 2431,
3124, 3142, 3214, 3241, 3412, 3421,
4123, 4132, 4213, 4231, 4312, 4321 This list includes every unique sequence of the numbers 1, 2, 3, and 4 without any repetition.