Lotto Belgique 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 | 833 | 837.9 | |
| 1 | 1016 | 1,047.3 | |
| 2 | 1009 | 1,047.3 | |
| 3 | 1049 | 1,047.3 | |
| 4 | 1068 | 1,047.3 | |
| 5 | 1041 | 1,047.3 | |
| 6 | 866 | 837.9 | |
| 7 | 792 | 837.9 | |
| 8 | 886 | 837.9 | |
| 9 | 866 | 837.9 |
How many different last digits does a draw have?
| Observed | Share | Expected | |
|---|---|---|---|
| 6 different | 314 | 20.0 % | 21.1 % |
| 5 different | 773 | 49.2 % | 49.6 % |
| 4 different | 434 | 27.6 % | 26.1 % |
| 3 different | 50 | 3.2 % | 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.