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In American horse racing terminology, a trifecta is a parimutuel bet in which the bettor must predict which horses will finish first, second, and third in exact order. The word comes from the related betting term, "perfecta". A trifecta is known as a tricast in the United Kingdom, as a tiercé in France and Hong Kong and as a tris in Italy.
A "boxed" Trifecta is where any option in a wager can be correct and the player bets the spread. These are effectively betting on every possible outcome of the three contenders and is calculated.
While a trifecta box is only 3 options (so 9 bets in total) this term is sometimes used, incorrectly, for all boxed bets (e.g. 4 options with 24 total bets, etc.),
It is also used to describe a situation when three elements come together at the same time.
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