The winning Michigan Daily 3 numbers for August 21, 1990 were: evening 9-9-1.
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 |
|---|---|---|---|---|
| Aug 21, 1990 | Evening | 9-9-1 | 19 | 1 |
| Aug 20, 1990 | Evening | 9-1-3 | 13 | 4 |
| Aug 18, 1990 | Evening | 2-3-7 | 12 | 3 |
| Aug 17, 1990 | Evening | 3-4-1 | 8 | 8 |
| Aug 16, 1990 | Evening | 7-8-5 | 20 | 2 |
| Aug 15, 1990 | Evening | 4-0-3 | 7 | 7 |