The winning Washington DC DC-4 numbers for June 6, 1991 were: single 0-9-9-7.
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 |
|---|---|---|---|---|
| Jun 6, 1991 | Single | 0-9-9-7 | 25 | 7 |
| Jun 4, 1991 | Single | 7-1-5-8 | 21 | 3 |
| Jun 3, 1991 | Single | 3-8-3-1 | 15 | 6 |
| Jun 1, 1991 | Single | 5-7-0-3 | 15 | 6 |
| May 31, 1991 | Single | 1-1-1-9 | 12 | 3 |