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  2. Mathematics of bookmaking - Wikipedia

    en.wikipedia.org/wiki/Mathematics_of_bookmaking

    In gambling parlance, making a book is the practice of laying bets on the various possible outcomes of a single event. The phrase originates from the practice of recording such wagers in a hard-bound ledger (the 'book') and gives the English language the term bookmaker for the person laying the bets and thus 'making the book'.

  3. 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.

  4. Sucker bet - Wikipedia

    en.wikipedia.org/wiki/Sucker_bet

    A sucker bet is a gambling wager in which the expected return does not reflect the odds of winning, and is significantly lower. For example, the chances of correctly guessing the order of the final three cards in a game of Faro is usually 1 in 6, yet the bet only pays 4:1 or 5:1. The complexity of the game can disguise the nature of the odds ...

  5. Parlay - Wikipedia

    en.wikipedia.org/wiki/Parlay

    A parlay, accumulator (or acca), combo bet, or multi is a single bet that links together two or more individual wagers, usually seen in sports betting. Winning the parlay is dependent on all of those wagers winning together. If any of the bets in the parlay lose, the entire parlay loses.

  6. Sports betting - Wikipedia

    en.wikipedia.org/wiki/Sports_betting

    Sports betting is the activity of predicting sports results and placing a wager on the outcome. Sports bettors place their wagers either legally, through a bookmaker/sportsbook, or illegally through privately run enterprises referred to as "bookies". The term "book" is a reference to the books used by wage brokers to track wagers, payouts, and ...

  7. Advantage gambling - Wikipedia

    en.wikipedia.org/wiki/Advantage_gambling

    Bookmaker B has the Jets as just a 2-point favorite. The advantage player may bet the Bills +4 with Book A and then the Jets -2 with Book B. If the Jets win by 3, the advantage player collects on both bets. If the Jets win by either 2 or 4, the advantage player collects on one winning bet and the other "push."

  8. Sports betting systems - Wikipedia

    en.wikipedia.org/wiki/Sports_betting_systems

    The network of bettors would then bet on games in which they had a statistical advantage (as determined by the software). Billy Walters, who was profiled on 60 Minutes, [1] was the most famous member of the group. [2] Sports betting systems have not always been well trusted or liked by bettors.

  9. Parimutuel betting - Wikipedia

    en.wikipedia.org/wiki/Parimutuel_betting

    Bettors usually make multiple wagers on exotic bets. A box consists of a multiple wager in which bettors bet all possible combinations of a group of horses in the same race. A key involves making a multiple wager with a single horse in one race bet in one position with all possible combinations of other selected horses in a single race.