The winning Louisiana Pick 4 numbers for May 21, 2010 were: evening 3-9-2-0.
Sum is the digits added together (5+5+0 = 10). Root sum keeps adding until one digit is left (10 → 1+0 = 1) — many regular players track it in their notebooks. Odd/Even marks each digit O or E (5-5-0 = OOE). High/Low marks 0–4 as L and 5–9 as H (5-5-0 = HHL).
| Date | Draw | Numbers | Sum | Root |
|---|---|---|---|---|
| May 21, 2010 | Evening | 3-9-2-0 | 14 | 5 |
| May 20, 2010 | Evening | 8-5-7-1 | 21 | 3 |
| May 19, 2010 | Evening | 3-0-3-4 | 10 | 1 |
| May 18, 2010 | Evening | 3-9-2-6 | 20 | 2 |
| May 17, 2010 | Evening | 3-9-6-1 | 19 | 1 |
| May 16, 2010 | Evening | 4-1-0-1 | 6 | 6 |
| May 15, 2010 | Evening | 2-4-5-0 | 11 | 2 |