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What Is The Three-Two Roulette Betting System?

If you play roulette long enough, you might realise that some players may often use certain roulette strategies. One example is the three-two (3/2) roulette betting system. The 3/2 system can be used to try and land potential high-frequency wins. The basis of the theory is probability.

In this Wizard Slots blog post, we’ll be discussing what the 3/2 roulette betting system is, how it works, possible advantages and disadvantages, and whether or not it can help players win.

How Does The 3/2 Roulette System Work?

Apparently, 2 or 3 numbers usually win in one round of roulette. Some numbers could even win more than once.

Players using the 3/2 roulette system will try to keep track of the game by recording the winning numbers for the first 28 spins. On spins 26, 27, and 28, there should be at least 1 repeat on a winning number, in theory. Then, players can wait for the next round to begin if no repeats occur on the last three spins.

The total amount of winning numbers shouldn’t exceed 21. However, if it does, it’s possible that number repetitions could occur in the next spins. So, players may wait for a new round in this scenario.

This system depends on a mix of 2 bets for each spin. The first bet should be on either red or black, while the second should be on a column. Ideally, your bets can cover 26 pockets on each spin. This leads to a 3:2 ratio on a colour and column, ensuring the larger bet always falls on the colour.

Three-Two Roulette System Example

So, assuming that only 21 numbers win in 28 spins, then on spin 29, we engage the three-two roulette betting system. Our task is to bet on numbers that haven’t won yet. So, placing a chip per straight number and its neighbours counts as 16 chips. But, if one of the numbers wins, the payout is 35:1.

The basis of the strategy is to wait for the 3rd time. Let’s put a few scenarios to the test, for example;

Scenario 1

Your red or black number wins, while the column loses. You also win 3 units on red or black while two units on the column lose. Therefore, your net result is +1 unit.

Scenario 2

Your red or black number loses, and so does the column. Therefore, your net result is -5 units.

Scenario 3

Your red or black number loses, while the column wins. You lose 3 units on red or black numbers and win 4 units on a column bet. Therefore, your net profit is +1 unit.

Scenario 4

Here, your red or black numbers plus column bets win. You’ll collect 3 units on red or black and 4 units on the column bet. Therefore, your net profit is +7 units.

The biggest drawback to the strategy is that you can lose 5 units if both of your bets lose.

Advantages of the 3/2 Roulette System

Using the 3/2 system can offer some advantages like;

More Action

Roulette allows players to make multiple bets per round. The three-two strategy can enable players to do this often, mainly because they can risk several units each round.

The ideal scenario is for the ball to land in both red or black number bets and a column bet.

More potential wins

With bigger wagers comes the potential for bigger wins. For example, let’s say your unit size is £10, and you win on both red or black numbers and column bets. Then 7 units would put you at a £70 profit.

The 3/2 bet strategy usually covers two-thirds of the wheel, which means potential wins could hit at least 70% of the time. A loss can still earn you a +1 unit, but only if you win on the other bet. Ultimately, the strategy may lead to more winning rounds.

Disadvantages of the 3/2 Roulette System

The 3/2 roulette system might sound promising so far, but there are drawbacks to the method.

Can lead to significant losses

The system might lead to possible wins, but it could just as easily lead to big losses. It almost guarantees a 30% loss, which doesn’t sound like much in the early stages but could be detrimental to your bankroll in the long run. In addition, roulette is a game of chance, so potential winnings can never be guaranteed.

Does not factor in house edge

The three-two betting system fails to account for the house edge. That’s because the theorists forget that the house edge is in play. Therefore, even if the strategy suggests wins may occur 70% of the time, players forget that the house always holds the advantage.

Doesn’t factor in Random Number Generators (RNGs)

Some theorists behind the 3/2 roulette rule may forget that some online versions of roulette use a mathematical algorithm called a Random Number Generator. So, it’s impossible to predict which spin will land a winning outcome since RNGs compute millions of mathematical values each second. So, players cannot tell when a win will occur, whether it’s the 2nd, 3rd, 5th, or 10th round.

Can affect your budget

The three-two roulette strategy encourages players to wager more. In some cases, players can lose money and go beyond their budget in an attempt to cover any losses. In addition, the player could be in dangerous territory if they have no regard for RNGs or the house edge. It’s important to stick to your budget and always gamble responsibly.

Can The 3/2 System Help You Win?

Like many roulette strategies, the 3/2 system cannot help you win. It fails to account for key aspects of the roulette wheel, like the house edge and Random Number Generators. Players who use the theory may forget that each spin is random, and there’s never a guarantee that wins can occur 70% of the time, or at all.


Remember, casino and slot games like roulette are random in nature. The house always has an edge, and nothing can ever be guaranteed.

Try to keep three goals in mind whenever you play roulette; to have fun, stick within your budget and always gamble responsibly.

*All values (Bet Levels, Maximum Wins etc.) mentioned in relation to this game are subject to change at any time.