- Thread starter CubaLibre
- Start date

Something I don't quite get as far as roulette is concerned is how in fact does the zero or double zero give the advantage to the house? Can anyone explain this to me?

From "The Roulette Winner" by Lee Tutor:

..."The casino edge, or house advantage, is “the

difference between what the casino should pay you,

and what it actually does pay you, when you win”.

Let’s look at the simple mathematics involved in

roulette payouts: Because there are thirty seven

numbers on the European single zero wheel, there is a

one in thirty seven chance, (1/37), to win a “straight

up” bet. It follows that on a win you should get paid at

36 to 1 when you win your bet. (36 to 1, means that

for every unit that you wager, when you win you

should get 36 units profit plus your original unit back

for a total of 37 units.)

These are the “true odds” but not what you get paid

at the casino! If you make a one unit straight up bet

and win it, the casino will only pay you at 35 to 1,

instead of 36 to 1, and so it has short-changed you by

one unit, which means that 1/37th of your winnings

have gone to the house.

So, every time you win a bet, the casino also wins

something back from you too! The house advantage

for a single zero wheel can be worked out by the

following formula:

(36- 35) x 1/37= 1/37

In percentage terms that is 1/37 x 100 = 2.7027%, or

2.7% approximately....

In the US, the casino advantage on roulette is even

higher. There, the wheel has 38 numbers, because it

has an extra zero, and the casino short-changes you by

2/38ths, because if you were to bet one unit on a

straight up number and you won, you’d only be paid at

35 to 1 instead of 37 to 1. So in effect you'd lose two

whole units of profit, as opposed to only losing the one

unit that you lose on a single-zero wheel.

Always remember that in the US, because of the

double-zero wheel with 38 numbers, the casino edge is

5.26%. Worse still on a “corner bet”, which covers the

five numbers: 0, 00, 1, 2, 3, the house edge rises

further still to 7.89%, because they only pay at 6:1 for

a five number bet (instead of 6.6:1). Avoid double-zero

wheels, except if there is a “surrender rule”, in which

case only bet on the even chance bets, like red/black,

Even/Odd, high/low...."

So the only way to beat roulette is to change the odds so you win more than 1 in 35 spins. Of course theres a similar rule for every type of bet.

Even if I won once every 35 bets I'd make a profit.

For a 1$ bet I'd get 35-34=$1 profit every 35 spins. (about half an hour's play)

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