Trifecta

[1] Known as a trifecta in the US and Australia,[2] this is known as a tricast in the UK,[3] a tierce in Hong Kong,[4] a triactor in Canada[5] and a tiercé in France.

[6] A trio, offered in Hong Kong and France, is a variation in which the order of the horses is not relevant.

For example, if horse number 2 is the banker, and the other three choices are numbered 6, 7 and 8, then there are a total six possible combinations for a winning bet: One horse (the "banker") is chosen to finish in the first three, and three or more selections are boxed for the other two places – the banker must finish either 1st, 2nd or 3rd in each possible combination.

[10] In the United States, the trifecta was introduced at Arlington Park in 1971.

[11] It was first used in Australia in April 1977 by TAB New South Wales, and was introduced in New Zealand in December 1983.