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Number 20 — the complete card

20 pays 35:1 straight-up ($10 wins $350 profit) on every wheel. It’s black, even, high (19–36), dozen 2, column 2, and hits 1 in 37 European spins / 1 in 38 American. ⚙ computed

On the wheel

European rim, reading 33 · 1 → 20 → 14 · 31. American rim: 11 · 7 → 20 → 32 · 17. Racetrack membership: Orphelins — the announced bets that physically cover this pocket (math here). “Neighbour” talk means the rim, never the felt — two different maps.

On the felt

Street trio: 19-20-21 (11:1). Split partners on the grid: 19, 21, 17, 23 (17:1 each). Every combination prices identically: the 36-pocket fiction doesn’t care which squares you pick.

Betting 20 — the honest numbers

At $10 per spin, 100 spins of straight 20 wagers cost an expected $27 on European wheels and $53 on American — identical to any bet, wrapped in maximum volatility (SD 5.8). Back-to-back 20: 1 in 1,369. In our 3.7-million-spin reference run, 20 landed 100,267 times against 100,000 expected (+0.27%) — textbook uniformity, the same verdict every number gets.

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Related

← 1921 →all numbersstraight-up math“best numbers” vs data

Frequently asked

What does 20 pay in roulette?
35 to 1 straight-up — a $10 bet returns $350 profit plus your stake. Splits touching 20 pay 17:1, its street 11:1.
Is 20 red or black in roulette?
20 is black — fixed by the traditional color chart on every wheel, even and high (19–36) for outside-bet purposes.
What are the neighbours of 20 on the wheel?
European rim: 1 and 14 adjacent, 33 and 31 beyond — a five-number “neighbours” call covers exactly this arc. Felt neighbours are different animals — wheel order and grid order share nothing.