Count how many times each digit repeats.
Start with 24.
Divide by the factorial of each repetition count.
Examples:
1234: no repetition -> 24
1123: one pair -> 24 / 2 = 12
1122: two pairs -> 24 / 4 = 6
1112: triple -> 24 / 6 = 4
1111: four identical -> 24 / 24 = 1
This method works for any four-digit set.
Repeated Digits Remove Duplicate Arrangements
4
KoinToto presents number-based gaming alongside other categories, and 4D terminology can feel much more complicated than it actually is.
Permutation counting is one area where a small amount of mathematics removes a lot of confusion.
Repeated digits do not require guesswork. Their effect on the number of unique arrangements follows a fixed formula.
Repeated Digits Remove Duplicate Arrangements
5
The maximum number of distinct arrangements for four different digits is 24.
Every repeated digit reduces that total because some swaps produce the same visible number.
That gives the familiar 24, 12, 6, 4, and 1 groups.
For KoinToto readers, understanding those groups provides a clear mathematical foundation for reading 4D combination formats. It also keeps the concept in its proper place: permutations describe how digits can be arranged, not what a future draw will produce.
