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  2. Spread betting - Wikipedia

    en.wikipedia.org/wiki/Spread_betting

    Spread betting. Spread betting is any of various types of wagering on the outcome of an event where the pay-off is based on the accuracy of the wager, rather than a simple "win or lose" outcome, such as fixed-odds (or money-line) betting or parimutuel betting . A point spread is a range of outcomes and the bet is whether the outcome will be ...

  3. Modular arithmetic - Wikipedia

    en.wikipedia.org/wiki/Modular_arithmetic

    Adding 4 hours to 9 o'clock gives 1 o'clock, since 13 is congruent to 1 modulo 12. In mathematics, modular arithmetic is a system of arithmetic for integers, where numbers "wrap around" when reaching a certain value, called the modulus. The modern approach to modular arithmetic was developed by Carl Friedrich Gauss in his book Disquisitiones ...

  4. Mathematics of bookmaking - Wikipedia

    en.wikipedia.org/wiki/Mathematics_of_bookmaking

    Decimal odds are a single value, greater than 1, representing the amount to be paid out for each unit bet. For example, a bet of £40 at 6 − 4 (fractional odds) will pay out £40 + £60 = £100. The equivalent decimal odds are 2.5; £40 × 2.5 = £100. We can convert fractional to decimal odds by the formula D = (b + a)⁄b.

  5. Each-way - Wikipedia

    en.wikipedia.org/wiki/Each-way

    Each-way. An each-way bet is a wager offered by bookmakers consisting of two separate bets: a win bet and a place bet. [1] For the win part of the bet to give a return, the selection must win, or finish first, in the event. For the place part of the bet to give a return, the selection must either win or finish in one of the predetermined places ...

  6. Even money - Wikipedia

    en.wikipedia.org/wiki/Even_money

    In case the dealer does have a blackjack, the player will push on the original bet and get a 2 to 1 payout on the even money side bet. However if the dealer does not have a blackjack, the player will be paid 3 to 2 on the original bet and lose the even money bet. Mathematically, requesting "even money" on a natural on a table that pays 3:2 for ...

  7. Odds - Wikipedia

    en.wikipedia.org/wiki/Odds

    In statistics, odds are an expression of relative probabilities, generally quoted as the odds in favor. The odds (in favor) of an event or a proposition is the ratio of the probability that the event will happen to the probability that the event will not happen. Mathematically, this is a Bernoulli trial, as it has exactly two outcomes.

  8. Card counting - Wikipedia

    en.wikipedia.org/wiki/Card_counting

    A bet ramp is a betting plan with a specific bet size tied to each true count value in such a way that the player wagers proportionally to the player's advantage to maximize bankroll growth. Taken to its conclusion, the Kelly criterion demands that a player not bet anything when the deck does not offer a positive expectation; "Wonging ...

  9. Fixed-odds betting - Wikipedia

    en.wikipedia.org/wiki/Fixed-odds_betting

    Fixed-odds betting. Fixed-odds betting is a form of gambling where individuals place bets on the outcome of an event, such as sports matches or horse races, at predetermined odds. In fixed-odds betting, the odds are fixed and determined at the time of placing the bet. These odds reflect the likelihood of a particular outcome occurring.