Korea Lotto 6/45 last-digit statistics: how are the final digits distributed?
Last digit = the final digit of a number (7, 17, 27 … have the last digit 7). A popular strategy says the winning numbers should have as many different last digits as possible. Here are the figures.
Frequency of each last digit
| Last digit | Observed | Expected | |
|---|---|---|---|
| 0 | 667 | 664.5 | |
| 1 | 828 | 830.7 | |
| 2 | 790 | 830.7 | |
| 3 | 848 | 830.7 | |
| 4 | 858 | 830.7 | |
| 5 | 816 | 830.7 | |
| 6 | 668 | 664.5 | |
| 7 | 698 | 664.5 | |
| 8 | 671 | 664.5 | |
| 9 | 632 | 664.5 |
How many different last digits does a draw have?
| Observed | Share | Expected | |
|---|---|---|---|
| 6 different | 273 | 21.9 % | 21.1 % |
| 5 different | 596 | 47.8 % | 49.6 % |
| 4 different | 328 | 26.3 % | 26.1 % |
| 3 different | 49 | 3.9 % | 3.2 % |
| 2 different | 0 | 0.0 % | 0.1 % |
Line with different last digits
Expected values are exact or simulated, assuming purely random draws. The draws follow chance exactly, and a last-digit rule does not change your chance of winning.