The winning Washington DC DC-4 numbers for October 22, 1990 were: single 1-8-0-5.
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 |
|---|---|---|---|---|
| Oct 22, 1990 | Single | 1-8-0-5 | 14 | 5 |
| Oct 19, 1990 | Single | 4-0-0-9 | 13 | 4 |
| Oct 17, 1990 | Single | 5-0-6-9 | 20 | 2 |