A craps bet on the next roll only.
3, 4, 9, 10 or 11 pays 1 to 1, 2 pays 2 to 1, and 12 pays 3 to 1. 5, 6, 7 or 8 loses. Seven totals win, but they cover only 16 of the 36 combinations, while the losing 5, 6, 7 and 8 cover 20. The house edge is 2.78% (with 12 paying 3 to 1).