The winning Delaware Play 4 numbers for April 6, 1981 were: night 4-1-7-9.
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 |
|---|---|---|---|---|
| Apr 6, 1981 | Night | 4-1-7-9 | 21 | 3 |
| Apr 3, 1981 | Night | 5-0-6-1 | 12 | 3 |