Welcome to the community, @Pe2. Thanks for asking in here :) It depends on which type of system bet you choose. If you pick 8 matches, you'll see the following options on your betslip: If you choose to bet doubles, you'll only need to win two matches in order to win one of the combinations, three matches to win trebles and so on. You won't necessarily make profit if you hit a double, as it depends on the odds. You can click on the Double button or any other system to check the odds you get from each combination. The number next to the white box shows how many combinations each system has - e.g. if you decide to bet €1 on sevenfolds, it'll be €8 in total and you'll need to win at least 7 out of 8 matches :)