The winning Washington DC DC-4 numbers for August 13, 1991 were: single 7-8-8-9.
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 |
|---|---|---|---|---|
| Aug 13, 1991 | Single | 7-8-8-9 | 32 | 5 |
| Aug 9, 1991 | Single | 1-5-7-7 | 20 | 2 |
| Aug 8, 1991 | Single | 8-0-9-4 | 21 | 3 |
| Aug 7, 1991 | Single | 9-4-0-9 | 22 | 4 |