The winning Delaware Play 3 numbers for May 21, 1990 were: night 6-3-4.
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, 1990 | Night | 6-3-4 | 13 | 4 |
| May 19, 1990 | Night | 0-6-0 | 6 | 6 |
| May 18, 1990 | Night | 6-5-4 | 15 | 6 |
| May 17, 1990 | Night | 9-2-0 | 11 | 2 |
| May 16, 1990 | Night | 1-0-6 | 7 | 7 |
| May 15, 1990 | Night | 1-5-4 | 10 | 1 |