The winning Connecticut Play3 numbers for October 21, 2017 were: day 7-5-3; night 1-5-0.
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).
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, 2017 | Night | 1-5-0 | 6 | 6 |
| Oct 21, 2017 | Day | 7-5-3 | 15 | 6 |
| Oct 20, 2017 | Night | 5-0-7 | 12 | 3 |
| Oct 20, 2017 | Day | 7-5-5 | 17 | 8 |
| Oct 19, 2017 | Night | 9-1-3 | 13 | 4 |
| Oct 19, 2017 | Day | 3-4-8 | 15 | 6 |
| Oct 18, 2017 | Night | 6-9-8 | 23 | 5 |
| Oct 18, 2017 | Day | 5-8-9 | 22 | 4 |
| Oct 17, 2017 | Night | 7-4-9 | 20 | 2 |
| Oct 17, 2017 | Day | 8-5-9 | 22 | 4 |
| Oct 16, 2017 | Night | 2-2-6 | 10 | 1 |
| Oct 16, 2017 | Day | 1-4-4 | 9 | 9 |
| Oct 15, 2017 | Night | 9-3-7 | 19 | 1 |
| Oct 15, 2017 | Day | 2-5-5 | 12 | 3 |