Dozen bet. A bet that the number will be in the chosen dozen: first (1-12, Premire douzaine or P12), second (13-24, Moyenne douzaine or M12), or third (25-36, Dernire douzaine or D12). Column bet.
First dozen / Premiere douzaine: numbers 1 - 12 (On the French-style mat, the square marked 12P) Middle dozen / Moyenne douzaine: numbers 13 - 24 (On the French-style mat, the square marked 12M)Last dozen / Dernier douzaine: numbers 25 - 36 (On the French-style mat, the square marked 12D)
What is the most successful roulette strategy? While there is no strategy that can guarantee a profit in the long run when playing roulette, the Martingale betting system is often regarded as the most successful strategy. It is easy to use and can provide good returns.
The most popular number by far is 7, considered lucky by many people. Another hit is 17 due to its central position on the table. Also, 8 is lucky in many Asian cultures and will also be frequently bet on. As for the unlucky numbers, you'll rarely see people betting on 13 for obvious reasons.