3-Way bets offer three outcomes for a particular market, such as 'Over', 'Exactly' or 'Under'. With 3-Way betting, you can bet on a particular outcome being over or under a set number or select 'Exactly' to bet on the outcome being an exact number.
A double bet is the most simple and straightforward multiple bet available. As the name suggests, it is simply two different selections bundled together into one bet. If the bettor makes two winning selections, they win and get a greater payout than they would if they have just placed two separate single bets.