How does the no-loss system work in a casino?

Question

Algorithms

How does the casino system work, preventing it from going into the red?
In my understanding, there should be constant control of the balance of the site, and if some bet exceeds it in case of winning, the game will not be in favor of the client. And if there are hundreds, thousands of such games? The site simply can not stand constantly considering the probability of going into the red.
Is there any formula or algorithm?
Interested for informational purposes only)

Answer 1

Everything is simple. If the probability of winning is always less than 50% (even 49%), then in the long run, the player will always go into the red, and the casino in the black. It's like roulette: 18 red, 18 black and zero. When betting on any position, the probability of winning will be <= 18/(18 + 18 + 1) = ~0.486 Therefore, roughly speaking, for 100 games, the user wins 48 games and loses 52. 2 games go to the pot.
If you use a probability of 50%, then you need to make a commission, put 1, won 0.8.
With these two methods, even the Martingale will not help the player. The main thing is that there should be no patterns in the random outcome, otherwise even a simple script will allow the user to win.
It turns out like and honestly, without cheating, without cheating, and guaranteed to be profitable for the casino.

Answer 2

In games where there is no way to control the outcome of the game - statistics and tight control, catching scammers and just very lucky ones.
In slot machines, online and other scams - there are no random numbers, the outcome of the game is either predetermined and calculated in favor of the casino, or the algorithm adjusts the result that is beneficial for the casino, respectively, everything will revolve around such parameters of this algorithm (sometimes give wins) so that customers the belief was maintained that they could win, i.e. not only statistics but also psychology works.
There is also an option when the casino does not participate in the game at all, but works exclusively on a percentage of the turnover (accepts money, gives out chips, and exchanges chips for money back, taking the percentage).

Answer 3

If the casino is not a sharaga in the basement, then there can be no talk of any pre-winning strategies for the casino, especially if it is a certified institution. Simple math tells us that if the player's chance is at least 0.1% less than the casino's chance, in the long run the casino will take all the player's money. So they don't have to come up with some "special" algorithms. Moreover, all online casinos MUST have a random number generator with a high approximation to the "real" random distribution, and these generators are all government controlled certified. Well, all games in the casino have a "skew" in terms of chances from ~ 51% to ~ 60%, in favor of the casino, of course.

Answer 4

There is no need to calculate the probabilities of each game.
The algorithm is calculated and tested in advance. An example was shown in his answer by Vlad_IT about roulette.
PS:
Moreover, if this is a certified casino, then all the algorithms have already been tested for years, if not decades. No one will let you "adjust the algorithm". This is the meaning of certification.
If this is a scam casino, of which the vast majority, then often there is not even a withdrawal of money there. An acquaintance was once offered to fix some small thing in the casino engine. He found where it says "Our clients won X money today". It was generated randomly every day. He also found the input of money into the system. He did not find any withdrawal of money in the engine.
If this is a scam casino that needs word of mouth with positive reviews - the boss simply tells the programmer: "make every third win, but not in a row."
This is easy to implement. We keep the amount of winnings and the amount of losses. As soon as the players' wins begin to catch up with the players' losses, we correct the win probability coefficient. The balance shifts and the casino returns the money. This is an elementary calculation - 1 multiplication, 2 additions. There is no math load.