How do the bookmakers ensure profit from accumulators?

[boocasino]

I know that they take profit from the juice/margin and when the market isn t balanced they lay at exchanges. But when there are more than 3 games in unbalanced market and at the same time how can they ensure the profit???

 

[jackpotjill]

If you have 3 games together the juice is multiplied. No need to ensure a profit really, they are so profitable.