The winning New York Numbers numbers for May 21, 2010 were: midday 8-2-8; evening 4-4-2.
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, 2010 | Evening | 4-4-2 | 10 | 1 |
| May 21, 2010 | Midday | 8-2-8 | 18 | 9 |
| May 20, 2010 | Evening | 3-4-6 | 13 | 4 |
| May 20, 2010 | Midday | 1-0-1 | 2 | 2 |
| May 19, 2010 | Evening | 6-9-4 | 19 | 1 |
| May 19, 2010 | Midday | 4-7-6 | 17 | 8 |
| May 18, 2010 | Evening | 4-3-0 | 7 | 7 |
| May 18, 2010 | Midday | 9-5-0 | 14 | 5 |
| May 17, 2010 | Evening | 6-3-6 | 15 | 6 |
| May 17, 2010 | Midday | 8-5-7 | 20 | 2 |
| May 16, 2010 | Evening | 4-7-7 | 18 | 9 |
| May 16, 2010 | Midday | 3-1-5 | 9 | 9 |
| May 15, 2010 | Evening | 7-1-1 | 9 | 9 |
| May 15, 2010 | Midday | 0-6-9 | 15 | 6 |