For example, you have selected five wagers, you may choose to bet on the system 4/5 . This means that you will receive your winnings if at least four of your five wagers are correct. The same principle applies if you choose a system 3/5 ; you will receive your winnings if at least three of your wagers are correct.
A 4/6 system consists of 15 bets which transpire from 6 picks -- fifteen 4-pick multis (parlays).