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  2. Betfair - Wikipedia

    en.wikipedia.org/wiki/Betfair

    Betfair is a British gambling company founded in 2000. It operates the world's largest online betting exchange. Its product offering also includes sports betting, online casino, online poker, and online bingo. Business operations are led from its headquarters in London, alongside satellite offices in Ceuta, Dublin, Leeds, and Malta.

  3. 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 ...

  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. Lottery mathematics - Wikipedia

    en.wikipedia.org/wiki/Lottery_mathematics

    In a typical 6/49 game, each player chooses six distinct numbers from a range of 1–49. If the six numbers on a ticket match the numbers drawn by the lottery, the ticket holder is a jackpot winner— regardless of the order of the numbers. The probability of this happening is 1 in 13,983,816. The chance of winning can be demonstrated as ...

  6. William Hill (bookmaker) - Wikipedia

    en.wikipedia.org/wiki/William_Hill_(bookmaker)

    William Hill is a British gambling company founded in 1934. Its product offering includes sports betting, online casino, online poker, and online bingo. Business operations are led from its headquarters in London, with a satellite office in Malta. The company was previously listed on the London Stock Exchange until it was acquired by Caesars ...

  7. Sports betting - Wikipedia

    en.wikipedia.org/wiki/Sports_betting

    Odds boards in a Las Vegas sportsbook. 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 ...

  8. Parimutuel betting - Wikipedia

    en.wikipedia.org/wiki/Parimutuel_betting

    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. In some countries it is known as the tote after the totalisator, which ...

  9. Andrew Black (gambling entrepreneur) - Wikipedia

    en.wikipedia.org/wiki/Andrew_Black_(gambling...

    4. Relatives. Cyril Black. Andrew Black (born 13 May 1963) is a British entrepreneur who, together with Edward Wray, a gambling entrepreneur, founded Betfair, the world's first and largest bet exchange. He is now a noted angel investor in technology businesses in the UK and further afield, and is a keen race horse owner and professional bridge ...