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  2. Mathematics of bookmaking - Wikipedia

    en.wikipedia.org/wiki/Mathematics_of_bookmaking

    Fractional odds are written a − b (a/b or a to b), meaning a winning bettor will receive their money back plus a units for every b units they bet. 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.

  3. Sports betting - Wikipedia

    en.wikipedia.org/wiki/Sports_betting

    Decimal odds of 2.00 are an even bet. UK format (fractional odds) are used by British bookmakers. They are the ratio of the amount won to the stake – the solidus "/" is pronounced "to"; for example, 7/1 is "seven to one". Fractional odds of 1/1 are an even bet. US format odds are the amount won on a 100 stake when positive, and the stake ...

  4. Spread betting - Wikipedia

    en.wikipedia.org/wiki/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 above or below the ...

  5. Over–under - Wikipedia

    en.wikipedia.org/wiki/Over–under

    A variant of over-under betting, known as Under Over, [5] is a dice game played at various festivals. The object of the game is to predict whether the dice will roll to a total of under 7, over 7, or at 7. The game is typically played with 2 dice. A player typically places a wager on one of three spaces. These spaces are:

  6. Gambling - Wikipedia

    en.wikipedia.org/wiki/Gambling

    Gambling has been part of Singapore's history, though it was strictly controlled by the government for many years. In the mid-20th century, illegal gambling was common. However, with the opening of regulated casinos in 2010, the approach shifted. Today, the government enforces strict laws to promote responsible gambling and prevent illegal ...

  7. Each-way - Wikipedia

    en.wikipedia.org/wiki/Each-way

    For the place part of the bet to give a return, the selection must either win or finish in one of the predetermined places for the event, such as first place or second place. The odds paid on the place part of the bet are usually a fraction (commonly 1 ⁄ 2, 1 ⁄ 3, 1 ⁄ 4 or 1 ⁄ 5) of the win odds. The trade-off being that one has a ...

  8. Vigorish - Wikipedia

    en.wikipedia.org/wiki/Vigorish

    Under proportional vigorish, a "fair odds" betting line of 2.00/2.00 [b] without vigorish would decrease the payouts of all outcomes equally, perhaps to 1.95/1.95, once it was added. More commonly though, disproportional vigorish will be applied as part of the efforts to keep the amounts wagered balanced, such as 1. 90 /2.00, making the outcome ...

  9. Lottery - Wikipedia

    en.wikipedia.org/wiki/Lottery

    Different policy banks would offer different rates, though a payoff of 600 to 1 was typical. Since the odds of winning were 1000:1, the expected profit for racketeers was enormous. [42] The first modern government-run US lottery was established in Puerto Rico in 1934, [43] followed by New Hampshire in 1964.