If you play 276 spins of Roulette an hour and 0.04 percent of the time you lose what chance as a percentage per hour do you have of not losing over a nine hour period?

What the previous person said is incorrect, the lowest percentage of winning, at least on a double zero wheel is 2.63%, there is no 0.04 percent chance. so therefore every single spin if you bet on one number would be 2.63% chance of winning, out of all 276 spins your odds would still be 2.63% chance of winning in total, keep in mind one number pays 35 to 1 so if you bet 5 dollars and won, you would have 175 dollars, and you would have 35 chances to break even.

No chance, because if 0.04% of the time you lose, you're losing all of the time. The odds, however, in roulette stay fixed, so at any one time, you'd have a 99.96% chance of winning with those odds.