The winning Delaware Play 4 numbers for March 21, 1998 were: day 2-7-7-7; night 3-0-9-5.
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 |
|---|---|---|---|---|
| Mar 21, 1998 | Night | 3-0-9-5 | 17 | 8 |
| Mar 21, 1998 | Day | 2-7-7-7 | 23 | 5 |
| Mar 20, 1998 | Night | 9-5-0-7 | 21 | 3 |
| Mar 20, 1998 | Day | 8-9-2-2 | 21 | 3 |
| Mar 19, 1998 | Night | 8-0-9-4 | 21 | 3 |
| Mar 19, 1998 | Day | 6-2-2-0 | 10 | 1 |
| Mar 18, 1998 | Night | 6-0-1-1 | 8 | 8 |
| Mar 18, 1998 | Day | 7-5-9-9 | 30 | 3 |
| Mar 17, 1998 | Night | 3-2-2-7 | 14 | 5 |
| Mar 17, 1998 | Day | 4-9-5-2 | 20 | 2 |
| Mar 16, 1998 | Night | 3-7-6-3 | 19 | 1 |
| Mar 16, 1998 | Day | 9-3-3-6 | 21 | 3 |
| Mar 15, 1998 | Night | 4-1-6-4 | 15 | 6 |