The winning New York Numbers numbers for September 18, 1988 were: evening 9-9-0.
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 18, 1988 | Evening | 9-9-0 | 18 | 9 |
| Sep 17, 1988 | Evening | 6-5-8 | 19 | 1 |
| Sep 16, 1988 | Evening | 1-3-2 | 6 | 6 |
| Sep 15, 1988 | Evening | 2-0-1 | 3 | 3 |
| Sep 14, 1988 | Evening | 4-0-7 | 11 | 2 |
| Sep 13, 1988 | Evening | 5-5-0 | 10 | 1 |
| Sep 12, 1988 | Evening | 8-7-8 | 23 | 5 |