Understanding how lottery odds are calculated requires understanding hypergeometric distributions and combinatorics. When a drawing machine selects 5 white balls without replacement and 1 special ball, every single tier's odds can be exactly derived.
Combinatorics 101: The Binomial Coefficient
For Powerball (choosing 5 balls from 69): C(69, 5) = (69 × 68 × 67 × 66 × 65) / (5 × 4 × 3 × 2 × 1) = 11,238,513. Multiplying by the 26 possible Powerballs yields:
Complete 9-Tier Powerball Odds Table
| Match Tier | Base Prize | Exact Combinatoric Formula | Exact Odds |
|---|---|---|---|
| 5 + PB (Jackpot) | Jackpot | C(5,5) × C(64,0) × 1 | 1 in 292,201,338 |
| 5 + 0 | $1,000,000 | C(5,5) × C(64,0) × 25 | 1 in 11,688,054 |
| 4 + PB | $50,000 | C(5,4) × C(64,1) × 1 | 1 in 913,129 |
| 4 + 0 | $100 | C(5,4) × C(64,1) × 25 | 1 in 36,525 |
| 3 + PB | $100 | C(5,3) × C(64,2) × 1 | 1 in 14,494 |
| 3 + 0 | $7 | C(5,3) × C(64,2) × 25 | 1 in 579.8 |
| 2 + PB | $7 | C(5,2) × C(64,3) × 1 | 1 in 701.3 |
| 1 + PB | $4 | C(5,1) × C(64,4) × 1 | 1 in 91.98 |
| 0 + PB | $4 | C(5,0) × C(64,5) × 1 | 1 in 38.32 |
The overall odds of winning any prize in Powerball are 1 in 24.87.
Modern Mega Millions Odds
Under the modern 5/70 + 1/24 matrix, total combinations are C(70, 5) × 24 = 12,103,014 × 24 = 290,472,336. Overall odds of winning any prize are 1 in 22.8.