The winning Washington DC DC-3 numbers for August 21, 1991 were: single 6-1-1.
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 21, 1991 | Single | 6-1-1 | 8 | 8 |
| Aug 20, 1991 | Single | 8-8-5 | 21 | 3 |
| Aug 17, 1991 | Single | 2-2-6 | 10 | 1 |
| Aug 16, 1991 | Single | 1-9-2 | 12 | 3 |
| Aug 15, 1991 | Single | 0-7-7 | 14 | 5 |