A bookie can make a mistake by sometimes calculating the odds at an event that add up to less than 100%. This means that you'd be able to back all the horses in the race and still make a profit. In practice, this rarely happens.

See also Over-Round.

TOP 10

1. Sport Betting

2. Betting

3. Horse Racing Betting

4. Spread Betting

5. Betting Online

6. Football Betting

7. Rugby Betting

8. Horse Betting

9. Financial Spread Betting

10. Greyhound Betting

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