I've made a python program that uses martingale betting method to see what the probability is to double your starting pot and then stop at European roulette (no double 00). Brandy 33 roulette numbers PDF . Apply that seed in a sequence of mathematical operations to generate the result. When there are a lot of things that need to go right to perform at virtuoso levels, most of them need to become second nature. q = 1 − p = 0. The Hamburg Spielbank roulette is single-zero: A total of 37 numbers. First we must define the parameters: P (e) is the probability of an event E. What is the probability that a blue marble gets picked? Number of ways it can happen: 4 (there are 4 blues). One-half of the numbers from 1-36 are red, and the other half are black; 0 and 00 are green. A NUMBER REPEATING 3. 20. For a coin toss, e. There are 5 5 possible outcomes: you win your first bet: probability p p. Now we can work out all the probabilities for winning 1, 2, 3, 4, 5, etc. comes up prior, the outcome is still random and 50/50. Cite. No real advantage. Oddly enough, 10-12 is Yellow, 13-14 is Orange and 15-17 is Purple. If we make a triangle with F[p,n,m,v], then we get a triangle of fractions where its denominator and. you lose your first bet, and win your second: probability (1 − p)p ( 1 − p) p. The selected chromosomes are displayed in Table 2. We can convert fractional to decimal odds by the formula D = (b + a)⁄b. Euclid's approach consists in assuming a small set of intuitively appealing axioms (postulates) and deducing many other propositions from these. My Patreon : roulette mathematics, the possible profit of a bet is described by the profit function of that bet, which equates the payouts of the constituent bets. Roulette’s army is huge, formidable and unpredictable, but poorly . You bet the base amount (e. If you are unaware of what a betting progression is, mathematics is simply changing the size of bets based on wins and losses. One legitimate example of using maths roulette beat roulette is to calculate mathematical amount of times that the ball bounces 10 pockets from where it strikes the rotor. This condition gives a relation between math n and c and math the number of math to be studied. In American roulette, the wheel features a green 0 and 00, while the European. 78%. To figure out what comes next, just add the last 2 numbers in the sequence: 55 + 89 = 144. 16% for a double-zero table). Every sports bettor needs to have a handful of Excel formulas at his fingertips. Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. What's this fuss about true randomness?. Roulette roulette bebe for roulette A to occur exactly m fisher roulette strategy in n spins is given by the formulaaccording to Bernoulli's formula. In each trial the probability of success is p p, and the probability of failure is q = 1 − p q = 1 − p. by Edward O. " Learn about our Editorial Process Updated on January 13, 2019 Standard Deviation math formula please! Started by Master_of_pockets, Jul 15, 09:33 AM 2012. While various strategies claim to increase your winning chances, none can guarantee a win every time. This question is purely from a mathematical standpoint. Then you can use the following formula: Odds for Winning = Probability of Winning / (1 – Probability of Winning). The probability you will not win at least once after n n spins is. The formula for expectation yields 17(1/19) + (-1)(18/19) = -1/19. The parameterization. 7 per cent return in regular roulette gambling, where players dot not rely on a mathematical strategy to win. The D’Alembert is one of the safest system you can use because while you do increase your bets after a loss, it’s at a much smaller rate than the Martingale. Zero & double zero sum to 0. This is fine for many purposes, but it may not be. with some fantastic magical formula that only exists in your head. • It relies on team camouflage and, because it utilizes all three elements of the ABS camouflage model, A(cting), B(etting), S(trategy), it is undetectable. How large is the probability that the next throw is the number…Go to to subscribe to the full list of courses and get source code for projects. With 2 $ I win if at least one bet succeeds, that is 1 − (36/37)2 1 − ( 36 / 37) 2. By applying these techniques to a standard casino-grade European roulette wheel, we demonstrate an expected return of at least 18%, well above the -2. 057%. Equation Games. Roulette: A Brief History. Just as one die has six outcomes and two dice have 6 2 = 36 outcomes, the probability experiment of rolling three dice has 6 3 = 216 outcomes. The . Related Video "Roulette Math Formulas" (263 movies):Professor, Department of Mathematics and Statistics University of British Columbia – Okanagan Dr. Unless your capital is comparable to that of the bank you will find that the probability of ruin is effectively 1 1. In fitness proportionate selection, as in all selection methods, the fitness function assigns a fitness to possible solutions or chromosomes . 7%), which. Richard Jarecki, a medical professor at the University of Heidelberg, was one of the 13. A mathematically based system for counting apples might be to consider the amount of oranges and pears divided by amount of grapes, with some fantastic magical. 39+ is Blue, while 0-9 is Green. Stat Unit 3 Learn with flashcards, games, and more —. The remaining variable is called the ‘finals’ where your bet is on the last digit. The skip is simply the number of roulette spins that a number did not show up. If, however, you’ve decided to listen to our advice and read up on basic roulette rules first, once you’re feeling confident in your roulette knowledge, you can employ the math to calculate your odds. A roulette wheel has the numbers 1-36 and zero, and sometimes double zero. either wheel adds up to 666, since 00 does not increase the value of the sum of the wheel. B. Showing the initiative to improve as a gambler is a good attitude. 15. Roulette pokerstars know that the answer to my attention-grabbing question is: I imagine a hypothetical formula that considers our "money target" roulette percentage roulette success as inversely proportional the mathematics we want to win the less likely we are going math succeed. reprinting, reuse of formulas and tables, recitation, broadcasting, reproduction on microfilm or in any other way, and storage in data banks. Roulette seems like a fast-paced, entertaining game in which winning is one-in-a-million. For example, if you bet on a single number and win, there is only one winning outcome out of the 36 possible outcomes. 1. The game’s wheel features 37 pockets, coloured in green, red and black. Roulette wheel is a pie plot where the value of each pie is expressed in terms of fitness probability. If we take the French roulette wheel, having 37 numbers, and we place a. 027027027. It means that it takes 1 event (coin toss, that is) in order to have a 50-50 chance (or degree of certainty of 50%) that either heads or tails will come out. Chapter 3. Having 37 or more numbers gives the casino its edge. This formula employs the probabilities of winning and not winning the bet, the payout of the bet (2 to 1 for the column bet), and the stake. Method. A Reuleaux triangle [ʁœlo] is a curved triangle with constant width, the simplest and best known curve of constant width other than the circle. But your odds are definitely better. 1. eeny, meeny, miny, moe . Gambling is a popular source of entertainment for many people. For example: when we toss an unbiased coin. In order to calculate the house edge, we will apply the following formula: (Odds Against Winning – House Odds) * Probability of Winning * 100 = house edge percentage. Most losing systems focus on patterns the player thinks they see. The probability for event A to occur exactly m times in n spins is given by the. Roulette Mathematical Formula. If you win once, you stop playing. • For the sake of brevity, we will refer only to the American rouletteThe Mathematical formula to determine the proportionate value for the selection. -Bets can be made on. I married (my present wife), I changed my field of study fromFor example, if a roulette wheel has a radius of 10 inches, and the ball travels 7 inches along its circular path in 2 seconds, then we can find the ball's angular velocity by plugging s = 7. 2 Answers. A total of 36 red and black slots are available on the roulette wheel when it comes to playing American roulette. Using maths to predict numbers. We can break down the math by calculating the roulette probability of winning zero times in 30 spins, which is (37/38)^30= 44. The squaring gives "disproportionate" weights to large distances, e. Wheel of random countries Random wheel. and roulette is a mathematical game. 26 percent advantage on every bet, every time. 000032%. Calculate Probability Of Winning At Roulette Using Poisson. Most Popular Roulette Prediction Methods: Pros and Cons. 10,000 Week Roulette System PDF . P (b) is the probability of our bet B winning in one spin. Taylor, Ph. 0. In order to employ the Martingale Strategy for Roulette, you follow these steps: You pick a type of bet that offers the win-what-you-bet return as described above. Advantage. Associative Property of Multiplication Formulas. We denote by A the event a number of the chosen colour occurs. Some players will win big in a session, other will lose big. Play and win on the go from anywhere you get a connection. Card Counting Blackjack Systems, Gambling Mathematics, Cult, Fraud HTML . Pythagoras Theorem. I've made a python program that uses martingale betting method to see what the probability is to double your starting pot and then stop at European roulette (no double 00). Therefore if we take the formula and apply it, we will have the following equation: (19/18 – 1/1) * 18/37 * 100 = 0. A formula for calculating probability from odds is P = O / (O + 1). Every sports bettor needs to have a handful of Excel formulas at his fingertips. Usually, you only need to multiply the amount of money you have on a number by the payout. 1 : 1) 1 to 1. 26%) is almost double that of European roulette (2. Probability is an essential tool for casinos, as well as for banks, insurance companies, and any other businesses. Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. The true book of roulette is founded on mathematics, probability theory and statistical analysis of casino roulette spins and random roulette spins. You win when you wager $5, so you get the original $5 bet back plus the $5 payout. Bet on the rst (or the second, the third) dozen of numbers a successful bet paysWe will follow BODMAS rule to perform operations as follows: Step 1: Simplify the terms inside ( ) to get 13+2 i. This means that over the long run, you should expect to lose on average about 33 cents each. From a mathematical point of view, the games of chance are experiments generating various types of aleatory events, and it is possible to calculate by using the properties of probability on a finite space of possibilities. Geography. Binomial: "Bi" means two and "nomial" means terms. It is a technique used to. The strategy is based on increasing your bet after a loss. And if you invest just a little bit of time, you can use Excel to load and transform data as well as simulate games, size bets, track schedules, spot hedging opportunities, and more. Russian roulette is a game of chance in which one or more of the six chambers of a revolver are filled with cartridges, the chamber is rotated at random, and the gun is fired. The Martingale system is the most popular and commonly used roulette strategy. Nevertheless, given the fact that the house has an edge, no roulette strategy—be it a mathematical, a betting one, etc. KS2 Maths. Consider the distribution of (success) runs of length r r, where we say a run. Progressive roulette strategies are based on increasing the size of your bet after each round. Special Bets. Short term, players and the house have an almost equal opportunity of winning money, but in the long run, the house will win (expected. The standard deviation of a simple game like roulette can be calculated using the binomial distribution. It is the trace of a point (or a line) attached to a curve, while this curve rolls on another curve without slipping. A roulette wheel has 38 slots total, 36 of which are numbered 1 through 36, and 2 green slots labeled "0" and "00. Roulette is one of the oldest and most popular casino games in the world. How to Calculate Roulette Probabilities (Mathematics) We tricks a simple bet a math that is made through a unique placement of chips on the roulette table. g. so I am a complete excel and math noob and I want to have a cell in excel which will display the "Pelayo number", which is used in calculating bias in a roulette wheel. spin. Roulette Mathematics Formula - Our amazing Spins No Deposit offer at Daily Spins Casino. Link to the casino and the spreadsheet: strategy, roulette strategy 2019, roulette strategy to win, roulette system, best. -The European Roulette is made up of 37 spinning numbers and a ball is thrown which falls into one of them. Link to the casino and the spreadsheet: strategy, roulette strategy 2019,. Teaching probability can be challenging because the mathematical formulas often are too abstract and complex for the students to fully grasp the underlying meaning and effect of the concepts. In reality, most random numbers used in computer programs are pseudo-random, which means they are generated in a predictable fashion using a mathematical formula. 2 Answers. So I have subtracted the $23^{37}$ words that miss the "letter" (roulette number) $1$, also the $23^{37}$ that miss the letter $2$. Mark Bollman. A roulette wheel has 38 numbers, 1 through 36, 0 and 00. To further discuss the gap theory in detail, it’s important to know about the Law of the Third. And since the negative number is greater, that’s the amount you expect to lose. Roulette Links, Resources, Software, Systems. (It is interesting to leave this open as you continue to spin the spinner. I. European version of roulette with 37 numbers (with a single zero). This allows us to compute the probybility exactly as a fraction. making the expected number of spins to win once 19 9 (this has a geometric distribution) and the expected number of spins to win four times 4 × 19 9. Here is the principal mathematical formula for calculating the roulette of any roulette outcome or event. This is a fun and interactive soccer math game about solving linear equations with whole numbers. e. for all members of population sum += fitness of this individual end for for all members of population probability = sum of probabilities + (fitness / sum) sum of probabilities += probability end for loop until new population is full. If you find this formula too difficult to understand, do not worry about it. 36% (1. 5 = £100. which gives you a 2. . Algebra Formulas. To use roulette math, you will need to determine the casino advantage of the game. 73,732 to 1. Title: The Roulette Formula: How To Predict The Exact Number Author: Kimo Li, Publisher: Trafford Publishing Pages: 152 Published: 2005-12-16 ISBN-10: 1412075947 View PDF. For example, if the player places two bets that pay 35:1 - 2:1 and wins, the payout sum of both bets will be considered the total payout value in that round. 5 q = 1 − p = 0. This gives b =5/6 a. After firing (and not getting hit), you can either pull the trigger again (1/5 probability of getting hit. Also, algebraic identities help to solve equations. If we bet a single chip on three numbers, the payout is 11-to-1. the Roulette Wheel Selection (RWS) along with its drawbacks. 4 * 1,000. Let F[p,n,m,v] be the probability of the v-th man losing in the Russian roulette game with p-players, n-chambers and m-bullets. 3. Sign up for Notion for free: the Trivial Shirt: other STEM merch at the STEMerch Store. Simply put, expected value is the anticipated value of a bet and is based on how much is bet and how likely the event is to take place. Martin J. The name “blackjack” for a two-card totaling to 21 comes from the earliest days of the game, when a. When it comes to the odds of winning at roulette, they are generally not in favor of the player. Bayes Theorem. Meet Edward Thorp Math professor, inventor, best-selling author, hedge-fund manager, gambler. Real Money vs. If you want to roulette this equation even roulette you can research Binomial distribution which is the foundation of most tricks probabilities. First we must define the parameters: P e is roulette probability of an event E. Random number generation is a process by which, often by means of a random number generator ( RNG ), a sequence of numbers or symbols that cannot be reasonably predicted better than by random chance is generated. Subject: 7 What are the most popular free slots?Each game s section is packed with formulas and tables. This would give you the percentage chance of you winning. Example: The probability of the same color showing up 6 times in a row on an American roulette wheel is 1. But the formula works only for binary bets where the downside. org. While roulette is fundamentally a game of chance, this hasn’t stopped intrepid gamblers from attempting to tame its unpredictability with mathematics. The probability of this bet winning is 13. You win when you wager $5, so you get the original $5 bet back plus the $5 payout. Of course there are many variables that will determine how far the ball will bounce, but you are looking for the most common distance the ball will travel. 26%. Roulette Formula CBW’s Amazing Performance 135 Skilful Play 143 Discipline and Control 149 Getting Casino Comps 159 Casino Etiquette 167 Keeping Records 169 Summary of Roulette’s Formula CBW 173 Going Home a Winner 183 Appendix A - Locations of Legal Roulette Wheels 186 Appendix B - Location of Single Zero Wheels in Land-Based. The biggest question gamblers often ask is whether the numbers on a roulette wheel can be predicted; unfortunately, the answer is no. Edward O. We have a total of 38 38 slots in which any spin of the wheel may land. 10/19. 0. " For any spin of the wheel, what is the probability of NOT getting a number 1 through 18? 10/19. 5. Unit 3 Summarizing quantitative data. How To. g. The roulette prediction formula is an intriguing concept that aims to predict where the roulette ball will land. Visual roulette number. If you bet $100 on a single number at the roulette table and win, you get a payoff of $3,500. D. One of the most widely used selection methods in GA is ‘roulette wheel method’. So if the house edge is 2. I spin the chambers, put the gun to my head, pull the trigger and survive. In a game of Russian Roulette, there are 6 chambers, one of which has a bullet in it. This is the case in a European Roulette and it differs from other roulettes. First captured by the WayBack Machine ( web. Question: Create an excel formula and write down the formula and answer the following:Considering that the roulette ball can land on the numbers 1 through 36 or land on a 0 or 00, calculate the appropriate probability of landing on a red number. Here are a few of roulette properties of the equivalence between complex bets: Statement 4: Statement 5: Statement 6: Statement 8: Statement The profits math two equivalent bets have the same mathematical expectation. That is the mathematical formula no matter what dance you play. Thanks very much in advance! Ok, so lets say I want to calculate the odds of a roulette wheel landing on red or black based on the last $10$ rolls. In the case of a revolver with six chambers (revolvers with 5, 7, or 8 chambers are also. I. By understanding the math behind gambling and betting games, people realize that their odds of winning are less than the odds of the house winning. It only takes a minute to sign. Best Answer. Roulette Mathematical Formula. Fibonacci roulette math formulas. The expected value is a type of calculation in mathematical statistics that measures of the center of a probability distribution. 5. We use the above information with the formula for expected value. archive. Binomial Theorem. A player dealt a two-card total of 21 consisting of an ace and a ten-count card (called a natural or blackjack) wins immediately until the dealer also has a natural. 18/37 = 48. Initially 1$ is used. A statistics expert would now interpret the probability of rolling the particular number as one-sixth, while the expert in gambling would say it is 1 chance out of 6. The two "terms" we are looking at are the probability of winning and the probability of losing. For example, they might see 5 reds in a row and assume red is on a streak. , is a professor of mathematics at Anderson University and the author of "An Introduction to Abstract Algebra. Math in how many with ways sequences all the roulette numbers can appear in 37 spins. 0014%. Internet slot machines are perfect for mobile devices. In addition, you will see a mathematical model of a bet and theThis work takes up the case of single-zero roulette to form a mathematical model for understanding the winning bet. Algebra is a branch of mathematics that substitutes letters for numbers. The essence of the Martingale roulette game system is as follows: we bet on an even chance of roulette (red-black, even-odd), for example, on "red": we bet on roulette at $ 1; if you lose, we double the bet and bet $ 2. They have the maximum odds of winning (almost 50%), but the lowest payout of all – 1:1. A genuinely effective roulette winning formula does not require betting progression. 00:16:00 Generalized formula for the pigeonhole principle (Examples #5-8) 00:32:41 How many cards must be selected to guarantee at least three hearts (Example #9a-b) 00:41:02 Prove there are at least 7 dice with the same number in the game of TENZI (Example #10) 00:45:07 Show there are at least two with the same remainder (Example. The answer is yes! In most cases, the movement of the ball can be predicted, but be aware that there is a possibility that this will not be the case. For each roll, the probability of landing on red is equal to 18 38 = 9 19 18 38 = 9 19. This means you win the same amount of money you bet for the spin. Roulette we must define the parameters: P e is the probability of an event E. by Sbowker. Note that fitness value and fitness probability are two different terms. The probability of losing your bet is 37/38. This number is found by using the formula: (35-36)/37 x 100 = 2. 5%. The binomial distribution assumes a result of 1 unit. Albert Einstein once said, “Nobody can win at roulette unless they steal. Example: Expected gain at roulette. He was a titan in the world of mathematics. There are 18 reds out of 37 numbers on the table which gives a decimal of 0. Genetic Algorithms. The margin of error, however, is as large as the area of Canada!Calculating roulette payouts are, generally speaking, pretty straightforward. Increasing and decreasing your bet by one unit. Basket, or a five number bet, is available only in American roulette and allows players to bet on the zero, double zero, 1, 2, and 3. , processing the house edge, which reduces the. , Mathematics, Physics, and Chemistry, Anderson University; Courtney K. The equivalent decimal odds are 2. 6% chance of winning this bet, and payouts can be 35:1 or 17:1. List of Basic Math Formula | Download 1300 Maths Formulas PDF - mathematics formula by Topics Numbers, Algebra, Probability & Statistics, Calculus & Analysis, Math Symbols, Math Calculators, and Number Converters. Oct 03, 11:23 PM 2023. [1] It is formed from the intersection of three circular disks, each having its center on the boundary of the other two. Find out how and why Probability Theory is an inherent part of the mathematics Various formulas for probability This is the Basic Math of Gambling. When you play online, the European roulette games have a house edge of 2. Formulas. There are more versions of this game than the other two versions of roulette combined. The probability of landing the ball on Red can be calculated by dividing the number of red slots by the total number of. Let p = 18/38 p = 18 / 38, the probability that your bet on black succeeds. Choose 13 numbers placed at an equal distance along the roulette wheel to use this trick. 0. For a roulette wheel with green. related to its mathematics. And if you invest just a little bit of time, you can use Excel to load and transform data as well as simulate games, size bets, track schedules, spot hedging opportunities, and. A has 154 elements. 0. 16%, and the payout – 6:1. On a warm night in May of 1969, a throng of awestruck gamblers crowded around a well-worn roulette table in the Italian Riviera. Roulette Probabilities. The Mathematics of Gambling Physical Prediction of Roulette I by O. Total number of outcomes: 5 (there are 5 marbles in total). Fund A Expected value of return = 0. But we go much further. In section 7, numerical example along with the example calculation is given. To find the percentage of a determined probability, simply convert the resulting number by 100. 7%. Roulette is a casino game played at a table with a numbered, spinning wheel and betting layout. Individual roulette numbers can skip (miss), at times, over 200 spins, even more than 300 spins!The Martingale betting system is based on a situation, where a player faces odds of 1 to 1 (or a bit worse) at every round in a game of chance. you lose your first two bets, and win the third: probability (1 − p)2p ( 1 − p) 2 p. e. The first form of roulette was devised in 18th century France. If we roll n dice then there are 6 n outcomes. Roulette wheel method is discussed in detail below. 1. 053. In the case of a revolver with six. 0 (zero) is a number representing an empty quantity. No mathematical formula or betting strategy can overcome the inherent house edge in the game. Example \(\PageIndex{5}\): House Edge in Roulette. In Definition 3. The odds of winning a straight-up bet on a European wheel are the same as the house edge: 2. A Delaunay roulette traces a focus of a conic section as the section rolls on a line. by Tmwb. Over the years, players have jointly agreed that the four roulette. Follow the ideas in the Free Winning Roulette System #2. An Act of Napster-Like Piracy Makes the Super Roulette Strategy Freeware II. Example of the optimal Kelly betting fraction, versus expected return of other fractional bets. Click the and buttons to change the number of sectors. 7. Features. Roulette Probability Calculator Or Roulette Calculator Or Probability Calculator Roulette: Trying hundreds of spins to come up with the right number in your roulette game? If it is the case you have landed on the right page where we will describe all about winning probability of a roulette game, roulette probability formula so that you. If, in this case, the point lies on the circle then the roulette is a cycloid . Mathematics may roulette at first logical to look for a mathematical way to beat roulette. 7%. Probability is an essential tool for casinos, as well as for banks, insurance companies, and any other businesses. Hints for designing a roulette wheel game in Android S. 0 : 1) 18/38 = 47. 057%. Standard Deviation math formula please! Started by Master_of_pockets, Jul 15, 09:33 AM 2012. Use the function COMBIN (C7, D7) in the E7 cell to calculate the basic probability. p k, d = 0 if 2 k < d. There are 38 numbers on the roulette wheel, so the probability of winning your bet is 1/38. Usually we. 93%. The events "given that the roulette hits $5$ reds, the next hit is red" and "the roulette hits $6$ reds" are different. Roulette Math Formula - Theme: Catch Box by Catch Themes. 2. Look at the row 50%: it has the number 1 in it. It is a mathematical fact that every roulette number has a repeat cycle based on FFG. Possible Outcomes and Sums. Neinchel is selling his indexing system as software for $75. 6. Roulette has nothing to do with the betting table. The simplest of these strategies was designed for a game in which the gambler wins the stake if a coin comes up heads and loses if it comes up tails. Nevertheless, the winning probability playing two dozens in single-zero roulette games is p=24/37=64. Suppose you start with a $1 wager and lose 4 times in a row. Any placement for a bet is. Let's start with solving one-step equations. Here is the list of some basic math formulas. Consider the situation in which a person played Russian roulette (one bullet, 6 chambers) until the bullet fires. By 1961, Thorp and Shannon reckoned they had. Think of your real money play as a performance. Each section also contains a description of the game, a classification of the gaming events and the applicable probability calculations. First we must define the parameters: P e roulette the probability of an event E. n is the number of trials (spins) x is the number of times our bet wins. Using the expected value formula, we will multiply each event with its probability and add them all up for each fund. Roulette. 0526 × $1,000,000 = $52,600. That system, he says, has earned the Stourbridge 50-year-old a small. The probabilities to win or loose stay unchanged. The house edge is the advantage the casino has over players. A roulette is a curve traced by a fixed point on a closed convex curve as that curve rolls without slipping along a second curve. As you execute more unsuccessful bets, the likelihood of a green bet occurring increases to match the average probability of getting green" This is false, and again equivalent to the gambler's fallacy linked above. Where n is. -Bets can be made on based on a number, or a group of numbers, and are rewarded differently. 7% and you bet $1, you can expect to lose $0. Format Roulette Odds Sample Probability Theory Guide roulette odds sample probability theory Here are some probabilities of consecutive occurrences of the same colour (in American roulette): 2 times in a row: P 2243% 19 9 19 9 2 = ⋅= 3 times in a row: P 1062% 19 9 19 9 19 9 3 = ⋅ ⋅= 4 times in a1:1. Roulette is one of the most popular games in online casinos. e.