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Law of Large Numbers in Gambling: What It Really Means
What the law of large numbers says about gambling: averages settle on the house edge while totals swing wider, with roulette and coin-flip math.
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Gambler’s Fallacy: Why Past Spins Don’t Change the Odds
The gambler’s fallacy is the belief that past results change the next outcome. See the math with roulette, coin and dice examples, step by…
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Roulette House Edge: Formula and Calculation
How the roulette house edge is calculated from true odds and payout odds, with worked examples and a table of European, American and triple-zero…
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Expected Value Formula for Gambling: Worked Examples
The expected value formula for gambling, with worked roulette and betting examples, a table of EV by bet, and how EV becomes expected loss.
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Convert American Odds to Decimal and Fractional Odds
How to convert American, decimal and fractional odds, find the implied probability, and see how the bookmaker’s margin shows up in a market.
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Probability in Gambling: Formulas and Worked Examples
How probability works in gambling: the four core formulas, worked roulette, dice and card examples, and a table of common bet probabilities.