The winning Washington DC DC-3 numbers for July 14, 1987 were: single 7-7-1.
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 |
|---|---|---|---|---|
| Jul 14, 1987 | Single | 7-7-1 | 15 | 6 |
| Jul 10, 1987 | Single | 0-2-4 | 6 | 6 |
| Jul 9, 1987 | Single | 2-7-3 | 12 | 3 |
| Jul 8, 1987 | Single | 3-3-6 | 12 | 3 |