The winning Connecticut Play3 numbers for October 17, 2021 were: day 4-8-1; night 8-9-4.
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 17, 2021 | Night | 8-9-4 | 21 | 3 |
| Oct 17, 2021 | Day | 4-8-1 | 13 | 4 |
| Oct 16, 2021 | Night | 6-1-8 | 15 | 6 |
| Oct 16, 2021 | Day | 6-7-5 | 18 | 9 |
| Oct 15, 2021 | Night | 3-6-6 | 15 | 6 |
| Oct 15, 2021 | Day | 9-4-1 | 14 | 5 |
| Oct 14, 2021 | Night | 2-9-1 | 12 | 3 |
| Oct 14, 2021 | Day | 0-4-9 | 13 | 4 |
| Oct 13, 2021 | Night | 5-1-9 | 15 | 6 |
| Oct 13, 2021 | Day | 5-7-7 | 19 | 1 |
| Oct 12, 2021 | Night | 9-7-1 | 17 | 8 |
| Oct 12, 2021 | Day | 8-5-4 | 17 | 8 |
| Oct 11, 2021 | Night | 3-1-4 | 8 | 8 |
| Oct 11, 2021 | Day | 5-7-3 | 15 | 6 |