The winning Delaware Play 3 numbers for September 21, 1979 were: night 4-5-6.
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 |
|---|---|---|---|---|
| Sep 21, 1979 | Night | 4-5-6 | 15 | 6 |
| Sep 20, 1979 | Night | 5-2-7 | 14 | 5 |
| Sep 19, 1979 | Night | 3-9-7 | 19 | 1 |
| Sep 18, 1979 | Night | 8-9-6 | 23 | 5 |
| Sep 17, 1979 | Night | 7-1-7 | 15 | 6 |
| Sep 15, 1979 | Night | 5-0-3 | 8 | 8 |