Lucky 31

A Lucky 31 consists of 31 bets involving 5 selections from different events, combining 5 singles, 10 doubles, 10 trebles, 5 four-folds and 1 accumulator. You need only one winner to guarantee a return.
In the event of one winner only, your winnings are doubled if all selections are chosen from Horse Racing or Greyhounds (See example b in 8.10 (Lucky 15)).
For five winners out of five a Bonus of 20% is added to winnings on the win part of the bet (winnings = the return for the win part of the bet minus the win stakes for that bet) if all selections are chosen from Horse Racing or Greyhounds.
For four winners out of five a Bonus of 5% is added to winnings on the win part of the bet (winnings = the return for the win part of the bet minus the win stakes for that bet) if all selections are chosen from Horse Racing or Greyhounds. If the win return with four winners is less than the total win stake then no Bonus will be applied.
If a Lucky 31 contains a non-runner, no Bonuses will apply to that bet.