Mathematics
Pie Chart of European Roulette Wheel Numbers
Last reviewed on 2026-05-22.
Mathematics — verifiable data, editable template
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A European (single-zero) roulette wheel has 37 pockets: 18 red, 18 black, and one green zero. The house edge comes from that single green pocket.
The data
- Red numbers — 18 pockets
- Black numbers — 18 pockets
- Green (zero) — 1 pockets
Source
Standard European roulette specification.
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