These are the only combinations in which the trio bet applies. With a street bet, you are betting on all three numbers in a single horizontal line, such as 10/11/12 or 22/23/24. A split bet is when you take two adjoining numbers. For example, if you bet $1 on black 29, it would pay $35 or $36, depending on if the roulette board had 0 and 00, or just 0. For example, you might put your money down on black 29.
The longest shot bet of these is the straight up bet.