UK Lotto 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 | 573 | 585.3 | |
| 1 | 689 | 702.3 | |
| 2 | 727 | 702.3 | |
| 3 | 689 | 702.3 | |
| 4 | 704 | 702.3 | |
| 5 | 673 | 702.3 | |
| 6 | 690 | 702.3 | |
| 7 | 742 | 702.3 | |
| 8 | 700 | 702.3 | |
| 9 | 719 | 702.3 |
How many different last digits does a draw have?
| Observed | Share | Expected | |
|---|---|---|---|
| 6 different | 220 | 19.1 % | 19.5 % |
| 5 different | 564 | 49.0 % | 48.8 % |
| 4 different | 330 | 28.7 % | 27.7 % |
| 3 different | 37 | 3.2 % | 3.8 % |
| 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.