The winning Connecticut Play3 numbers for May 21, 2015 were: day 0-5-7; night 8-5-3.
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 |
|---|---|---|---|---|
| May 21, 2015 | Night | 8-5-3 | 16 | 7 |
| May 21, 2015 | Day | 0-5-7 | 12 | 3 |
| May 20, 2015 | Night | 0-8-3 | 11 | 2 |
| May 20, 2015 | Day | 9-1-0 | 10 | 1 |
| May 19, 2015 | Night | 0-3-1 | 4 | 4 |
| May 19, 2015 | Day | 9-7-9 | 25 | 7 |
| May 18, 2015 | Night | 6-2-4 | 12 | 3 |
| May 18, 2015 | Day | 6-0-5 | 11 | 2 |
| May 17, 2015 | Night | 3-9-5 | 17 | 8 |
| May 17, 2015 | Day | 4-8-4 | 16 | 7 |
| May 16, 2015 | Night | 0-8-5 | 13 | 4 |
| May 16, 2015 | Day | 0-4-1 | 5 | 5 |
| May 15, 2015 | Night | 7-7-0 | 14 | 5 |
| May 15, 2015 | Day | 5-0-9 | 14 | 5 |