How To Calculate Trifectas?
To figure the cost of a Trifecta Key, multiply 1 times the number of horses you used times the number of horses you used minus one. For example, a $1 Trifecta Key 1 with 2,3,4,5 would be 12 possible combinations (1 x 4 x 3 = 12). How much do you win on trifectas? How …