The winning Michigan Daily 3 numbers for October 21, 1997 were: midday 2-2-3; evening 5-3-3.
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).
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 |
|---|---|---|---|---|
| Oct 21, 1997 | Evening | 5-3-3 | 11 | 2 |
| Oct 21, 1997 | Midday | 2-2-3 | 7 | 7 |
| Oct 20, 1997 | Evening | 4-9-0 | 13 | 4 |
| Oct 20, 1997 | Midday | 1-1-4 | 6 | 6 |
| Oct 18, 1997 | Evening | 8-0-0 | 8 | 8 |
| Oct 18, 1997 | Midday | 1-6-4 | 11 | 2 |
| Oct 17, 1997 | Evening | 5-0-0 | 5 | 5 |
| Oct 17, 1997 | Midday | 2-2-6 | 10 | 1 |
| Oct 16, 1997 | Evening | 5-8-7 | 20 | 2 |
| Oct 16, 1997 | Midday | 1-8-5 | 14 | 5 |
| Oct 15, 1997 | Evening | 3-8-7 | 18 | 9 |
| Oct 15, 1997 | Midday | 5-1-5 | 11 | 2 |