The winning Delaware Play 3 numbers for October 17, 2021 were: night 9-1-3.
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 |
|---|---|---|---|---|
| Oct 17, 2021 | Night | 9-1-3 | 13 | 4 |
| Oct 16, 2021 | Night | 8-3-3 | 14 | 5 |
| Oct 16, 2021 | Day | 6-2-4 | 12 | 3 |
| Oct 15, 2021 | Night | 6-6-9 | 21 | 3 |
| Oct 15, 2021 | Day | 6-2-2 | 10 | 1 |
| Oct 14, 2021 | Night | 4-9-1 | 14 | 5 |
| Oct 14, 2021 | Day | 1-6-8 | 15 | 6 |
| Oct 13, 2021 | Night | 2-0-1 | 3 | 3 |
| Oct 13, 2021 | Day | 4-8-2 | 14 | 5 |
| Oct 12, 2021 | Night | 0-7-4 | 11 | 2 |
| Oct 12, 2021 | Day | 8-7-6 | 21 | 3 |
| Oct 11, 2021 | Night | 4-6-8 | 18 | 9 |
| Oct 11, 2021 | Day | 3-1-5 | 9 | 9 |