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  2. Mathematics of bookmaking - Wikipedia

    en.wikipedia.org/wiki/Mathematics_of_bookmaking

    Calculations below for multiple-bet wagers result in totals being shown for the separate categories (e.g. doubles, trebles etc.), and therefore overall returns may not be exactly the same as the amount received from using the computer software available to bookmakers to calculate total winnings. [1]: 138–147 [2]: 163–177

  3. Parimutuel betting - Wikipedia

    en.wikipedia.org/wiki/Parimutuel_betting

    Parimutuel betting, or pool betting, is a betting system in which all bets of a particular type are placed together in a pool; taxes and the house-take, or vigorish, are deducted, and payoff odds are calculated by sharing the pool among all winning bets.

  4. Kelly criterion - Wikipedia

    en.wikipedia.org/wiki/Kelly_criterion

    Example of the optimal Kelly betting fraction, versus expected return of other fractional bets. In probability theory, the Kelly criterion (or Kelly strategy or Kelly bet) is a formula for sizing a sequence of bets by maximizing the long-term expected value of the logarithm of wealth, which is equivalent to maximizing the long-term expected geometric growth rate.

  5. Odds - Wikipedia

    en.wikipedia.org/wiki/Odds

    To calculate decimal odds, you can use the equation Payout = Initial Wager × Decimal Value [12]. For example, if you bet €100 on Liverpool to beat Manchester City at 2.00 odds the payout, including your stake, would be €200 (€100 × 2.00).

  6. Spread betting - Wikipedia

    en.wikipedia.org/wiki/Spread_betting

    Spread betting was invented by Charles K. McNeil, a mathematics teacher from Connecticut who became a bookmaker in Chicago in the 1940s. [5] In North America, the gambler usually wagers that the difference between the scores of two teams will be less than or greater than the value specified by the bookmaker, with even money for either option.

  7. Martingale (betting system) - Wikipedia

    en.wikipedia.org/wiki/Martingale_(betting_system)

    Increasing the size of wager for each round per the martingale system only serves to increase the average loss. Suppose a gambler has a 63-unit gambling bankroll. The gambler might bet 1 unit on the first spin. On each loss, the bet is doubled. Thus, taking k as the number of preceding consecutive losses, the player will always bet 2 k units.

  8. Vigorish - Wikipedia

    en.wikipedia.org/wiki/Vigorish

    Vigorish (also known as juice, under-juice, the cut, the take, the margin, the house edge or the vig) is the fee charged by a bookmaker for accepting a gambler's wager. In American English, it can also refer to the interest owed a loanshark in consideration for credit.

  9. Daily double - Wikipedia

    en.wikipedia.org/wiki/Daily_double

    An example of 1950 racing results from Washington Park Race Track highlighting the payout for successful daily double wagers. A daily double is a parimutuel wager offered by horse racing and greyhound racing tracks in North America. Bettors wager on the winners of two consecutive races, [1] pre-designated by the track for a particular race day ...