Let's assume Casino has a game, where the expected value of an outcome is 60% for Casino.
The casino has 1000 units of money in reserve for this game. Stakes are always 500 units of money.
Now John comes and wins twice in a row. In this case, the casino lost all reserves.
My question is, what should be a minimal stake set by the casino, to avoid losing reserves? Does there exist a formula for this?