The winning Washington DC DC-3 numbers for September 16, 1988 were: single 6-9-3.
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 |
|---|---|---|---|---|
| Sep 16, 1988 | Single | 6-9-3 | 18 | 9 |
| Sep 13, 1988 | Single | 1-8-1 | 10 | 1 |
| Sep 12, 1988 | Single | 6-1-5 | 12 | 3 |
| Sep 10, 1988 | Single | 5-5-2 | 12 | 3 |