The winning New York Numbers numbers for May 21, 2015 were: midday 7-4-8; evening 2-2-8.
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 | Evening | 2-2-8 | 12 | 3 |
| May 21, 2015 | Midday | 7-4-8 | 19 | 1 |
| May 20, 2015 | Evening | 7-0-2 | 9 | 9 |
| May 20, 2015 | Midday | 0-1-5 | 6 | 6 |
| May 19, 2015 | Evening | 4-9-3 | 16 | 7 |
| May 19, 2015 | Midday | 0-3-5 | 8 | 8 |
| May 18, 2015 | Evening | 6-4-3 | 13 | 4 |
| May 18, 2015 | Midday | 8-1-4 | 13 | 4 |
| May 17, 2015 | Evening | 2-7-0 | 9 | 9 |
| May 17, 2015 | Midday | 6-1-1 | 8 | 8 |
| May 16, 2015 | Evening | 2-9-6 | 17 | 8 |
| May 16, 2015 | Midday | 5-2-0 | 7 | 7 |
| May 15, 2015 | Evening | 7-1-7 | 15 | 6 |
| May 15, 2015 | Midday | 3-9-0 | 12 | 3 |