Steps

Simple odds

1. Color (x 1) [48.64%] (red or black)
2. Type (x 1) [48.64%] (even or odd)
3. Value (x 1) [48.64%] (missing or passing)
4. > Missing if less than (or equal to) 19, Pass if greater than 19

Multiple chances

1. Full number (x35) [2.70%]
2. Horse (x17) [5.40%] (middle of 2 full numbers)
3. Transversal (x11) [8.11%] (line of 3 full numbers)
4. Square (x 8) [10.81%] (middle of 4 full numbers)
5. Sizain (x 5) [16.21%] (middle of 2 Transverse)
6. Column (x 2) [32.43%] (row of 12 full numbers)
7. Dozen (x 2) [32.43%] (block of 12 full numbers)
8. 2 Columns (x 0.5) [--.-- %] (middle of 2 Columns)
9. 2 Dozens (x 0.5) [--.-- %] (middle of 2 Dozens)
10. /!\ The exchange percentage of finding the right number is way too low
11. > Multiple bets are still too broad, to minimize losses, the safest is therefore single bets

Calculation

1. For reasons of simplification of explanation and calculation, we will take 50% (so 1/2) for the simple chances
2. > For each draw, it will therefore always be 50% (so 1/2)
3. But we can calculate the probability of having the same parameter consecutively
4. For example: 3 black in a row
5. 25% (so 1/4) of having 2 blacks in a row (or 1 black and 1 red)
6. 12.5% (so 1/8) to have 3 blacks in a row (or 2 black and 1 red, 1 red and 2 black, 3 red)
7. 6.2% (so 1/16) to have 4 blacks in a row (or 3 black and 1 red, etc.)
8. > Mathematically speaking, there is therefore an equal chance of having one or the other

False Technique

1. /!\ In life we only see a very small part of the total output, so it seems like it evolves differently from mathematics and we can guess, but that's not the case in reality
2. Wait at least two releases (or watch the previous ones)
3. > Play the most likely case
4. If 2 red = play black
5. If 2 even = play odd
6. If 2 is missing = play pass
7. The goal is to wait for a series to increase the bet on the other case (because we have a better chance of staying in the little we see, even if it is not obligatory)
8. > If you lose, then double down and do the same again (you have more change for this to be good and it will compensate for the previous round)

Explanation

1. The law of large numbers clearly shows that there will be series of 12 red, 40 black, etc. on tens of thousands of prints, hence the smoothing of the results with the output percentage
2. As we only see a few prints (even 100 over several hours represent nothing), we are influenced by our ignorance not to see more

For further

1. If you want to play the numbers, you have to play several at the same time
2. > As a reminder, a full number (x35)
3. To play multiple numbers, there are different strategies to cover a maximum number with a minimum chip, generally based on the cylinder view and the classic, called all-in
4. > The Neighbors of Zero, The Third, The Orphelins and The Neighbors of the Released Issue

Warning

1. Only the French version (2.70% advantage for the Casino)
2. The 00 of the American version makes this version half as interesting (5.27% advantage for the Casino)
3. The betting possibilities are varied