Keno 10 picks, high difficulty
Picking 10 numbers and drawing 10 from a pool of 40: the probability of all 10 matching is C(10,10) × C(30,0) / C(40,10) = 1 / 847,660,528 / hypergeometric = ≈ 1 in 891,089.
High-difficulty paytable rewards the rare big hits (8+, 9+, 10+) while making lower match counts (4-6) less valuable than the classic paytable. Long-run RTP still targets ~70%.
Math & key numbers
| Pool | 40 numbers |
| Drawn | 10 |
| Picks | 10 |
| 10-of-10 probability | ~0.000112% (1 in 891,089) |
| 10-of-10 multiplier | 25x (max) |
| 0-of-10 probability | ~5.0% |
| Expected hits per round | 2.5 (10×10/40) |
| RTP | ~70% |
Strategy notes
- 10 picks on high difficulty is the lottery variant of Keno. Don't expect frequent wins.
- Lower pick counts (1-5) have higher hit rates and tighter variance with the same long-run ~70% RTP.
- Pick patterns are irrelevant — every number has 25% probability per draw.
- Auto-bet works for variance realisation but doesn't alter the long-run loss rate.
Other game strategies
Frequently asked questions
- What are the odds of hitting 10 of 10 in Keno?
- Approximately 1 in 891,089 (0.000112%). Pays 25x on Rust Snowball — the max single-row Keno payout.
- Is 10 picks the best Keno strategy?
- Same EV as any pick count (~70% RTP). Highest variance, slowest hits. Pick by variance preference, not math.
See the main Keno page for full game mechanics, rules, and disclosed house edge.
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