The winning Washington DC DC-4 numbers for May 27, 1988 were: single 8-9-7-7.
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 |
|---|---|---|---|---|
| May 27, 1988 | Single | 8-9-7-7 | 31 | 4 |
| May 26, 1988 | Single | 1-1-2-2 | 6 | 6 |
| May 24, 1988 | Single | 5-5-8-9 | 27 | 9 |
| May 23, 1988 | Single | 8-2-6-7 | 23 | 5 |