The winning Washington DC DC-4 numbers for February 10, 1987 were: single 5-4-1-5.
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 |
|---|---|---|---|---|
| Feb 10, 1987 | Single | 5-4-1-5 | 15 | 6 |
| Feb 7, 1987 | Single | 7-2-7-3 | 19 | 1 |
| Feb 5, 1987 | Single | 4-3-0-5 | 12 | 3 |