Casino's Predominance

How do casinos make money? Do croupiers try to win against the gamblers? Perhaps they even cheat by swapping the cards or spinning the roulette wheel so that the gamblers lose. Are there any cameras in slots. , and perhaps there is someone who decides when the gambler wins or loses? The answer is simply : NO.

Generally, casinos do not cheat, the reason simply is-they do not need to do it (although, undoubtedly there are exceptions to that rule). Casinos make enough profit without cheating. Every single game has its so called casino`s predominance .Depending on the game the predominance may vary from 25% to about 0.5%.

Even with the casino`s predominance some gamblers win , obviously. However, after some time there will be more losses than winnings.

For example: Let`s say we play heads and tails. You ( the gambler) toss the coin- if you get heads, you lose $1.If you get tails , I ( the casino) pay you 90 cents. After 100 games, the gambler wins 50 times and loses 50 times on average.

The gambler`s winnings are:

50x 90 cents = $45
Losses:50x $1 =$50

The total loss after 100 games with the stake of $1 is $5, thus casino`s predominance is 5%.

Casino`s predominance can be calculated using the following formula:

Roulette is a relatively simple example of casino`s predominance. Let`s assume that the gambler stakes $1 on all numbers in American roulette (twozeros) 38 numbers altogether. The gambler wins each time $35 +$1 staked. The gambler`s loss is $2 after every single spin of the roulette wheel. Casino`s predominance equals:

When you stake $1 on red ; you win 18 times (the amount of red numbers) on 38 spins of the roulette wheel , on average. And you lose 20 times(18 black numbers +0 and 00). Again, casino`s predominance equals:

Almost all bets in American roulette have casino`s predominance of 5.26%. The only difference is that the gambler stakes first five numbers (0, 00,1,2,3).The pay for the first five numbers is 6:1. The gambler wins five times on 38 spins of the roulette wheel, on average. Altogether the gambler loses:

In French roulette (one zero,37 numbers altogether) casino`s predominance equals:

The lottery machines have changed also due to growing popularity. Nowadays , they are not just simple mechanic machines, though they look like that .Every single machine contains built-in RNG-Random Number Generator( sometimes called EPROM).It is a type of a computer, which decides about the percentage of casino`s predominance on a given machine. It often happens that two exactly the same machines , placed next to each other) , contain RNG set on a different percentage of casino`s predominance , RNG are frequently exchanged in those machines.

Usually, the machine keeps 25% to 1% of the whole amount of money , paying the rest as the winnings. It depends on the minimal stake on a machine (The lower the stake- the higher percentage of casino`s predominance is).

In Video Poker machines (just like in slots.) casino`s use RNG (Random Number Generator).However, in contradiction to slots, most of the local gambling commission boards require RNG in Video Poker to operate the same way. As if the gambler was at the table playing against the croupier , using one set of playing cards. It is vital, as it means that using a correct strategy, the gambler may reduce the casino`s predominance to minimum. Las Vegas Commission Board requires the Video Poker machines to operate the way described as above. A casino may lose the licence if it doesn`t follow that requirement.

Online casinos use so called RNG (Random Number Generator) which operates similarly to Video Poker RNG, so that the gambler feels as if he played against the croupier in a real casino. It means that, the chances of a lucky guess of a certain number in roulette with one zero should be 1/37; in roulette with two zero is 1/38 etc. There has been not enough surveillance over online casinos so far.

Predominance in individual casinos differs according to the actual rules of the games and the pay lists , as well as the strategy the gambler uses.