The winning Washington DC DC-3 numbers for February 21, 1990 were: single 2-1-7.
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 |
|---|---|---|---|---|
| Feb 21, 1990 | Single | 2-1-7 | 10 | 1 |
| Feb 19, 1990 | Single | 7-5-6 | 18 | 9 |
| Feb 17, 1990 | Single | 6-0-0 | 6 | 6 |
| Feb 16, 1990 | Single | 7-5-8 | 20 | 2 |
| Feb 15, 1990 | Single | 0-2-1 | 3 | 3 |