If you want to get technical, the odds of red then black spinning are 1 in (0.4865 x 0.4865). But it’s the same as red then red spinning, or black then black. The odds of dozens spinning in a row. There are three dozens on the table, and 37 numbers. So the odds of a dozen spinning once is 12/37. Again the odds don’t change based on previous dozens.
All the even bets in roulette are: red or black, even or odd, 1-18 or 19-36. These types of ...
At the very beginning of the game, the probability that the ball will stop on a red or black section is 18/37, 0.486. The probability that the zero wins is 1/37, 0.027. If Black wins, then the Red winning odds are increased like 19/37 = 0.736. In the event, that Black wins twice in a row, the red chances are increased even more 19/37 * 19/37 = 0.865.
A European Roulette table has one zero (green), 18 red and 18 black slots. In total there are 37 slots for the roulette ball to land on. The odds that the Roulette ball will land on red is 18/37 = 48.6%. The odds that the ball will land on red two times in a row is 48.6% x 48.6% = 23.6%.
Very rarely will I ever bet on red or black, and if I do it is with the understanding that the casino has the long-term edge. But you may recall a while back I did precognition testing. Precognition involves basically psychic predictions to determine whether or red or black will spin next.
Let’s take a look, and then we’ll explain how this relates to the Gambler’s Fallacy, or the Monte Carlo Fallacy- the belief that the odds of a black number coming in increase, the more times you see red. Let’s look at a European Roulette wheel. Over a single spin, the odds of a red number coming up are 18/37, or 1 in 2.06.
There are 18 black slots, 18 red slots and two green slots (0 and 00) on a US roulette wheel*. Your chances of hitting a black or red are equal, 47.4%. This translates to a 52.6% probability that the house will be scooping up all your chips on a black/red bet. The 5.26% 'spread' is known as the house edge.
October 1st, 2020. Backing red and black is a common wager on one of the most popular games in every casino, roulette. At odds of nearly 50/50 (more of that in a moment), it’s a simple bet to make and understand, and it’s easy to keep track of wins and losses. While many players like to randomly back red or black with no apparent technique, others employ a roulette strategy for black and red.