As the name says, Lucky 31 is a wager that entails 31 selections on the slip. To be precise, this betting option includes 5x singles, 5x doubles, 10x trebles, 5x 4-folds, and 1x 5-fold. So, all of these selections are a part of the wager; all of this makes Lucky 31 an exciting and risky proposition. In comparison to other horse racing betting systems, Lucky 31 has the most similarities to the Canadian. Either way, these wagers come with high odds, but a low probability. Also, they require a fair share of knowledge about horse racing in the first place.