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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. 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 ...

  5. 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 ...

  6. Martingale (betting system) - Wikipedia

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

    Even if the gambler can tolerate betting ~1,000 times their original bet, a streak of 10 losses in a row has an ~11% chance of occurring in a string of 200 plays. Such a loss streak would likely wipe out the bettor, as 10 consecutive losses using the martingale strategy means a loss of 1,023x the original bet.

  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. 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.

  9. Upset (competition) - Wikipedia

    en.wikipedia.org/wiki/Upset_(competition)

    Leicester City F.C., an Association football Club, won the Premier League in the 2015-16 season despite being 5000-1 underdogs, an example of an upset [1] An upset occurs in a competition, frequently in electoral politics or sports, when the party popularly expected to win (the "favorite") is defeated by (or, in the case of sports, ties with) an underdog whom the majority expects to lose ...