Yes, but the odds of hitting all 20 are extremely unlikely. The odds of hitting all 20 numbers in one go are around 3.5 quintillion to one. Most casinos recognize this fact, and therefore payout when a player hits a number close to 20. Some will pay out if a player hits 17/20. This gives the player much better odds of winning. The odds of hitting all 20 numbers has been calculated as 1 in 3 535 316 142 212 173 800.000.