</p>
<p>My "system " was to bet on the reoccurring numbers.<br />
If , say, 7 has just come, I will put (minimal bet ) on it, if it wins (chance 1/37 , alright, I put it again. )<br />
If 7 has not won and the winning number is, say, 10, I put on 7 and 10 in the next game, if one of them wins, I start the game anew with putting on the number which has just won, if none of them has won and the actual winning number was, say, 21 I put may bets on 7, 10, 21 in the next game and so on as long as one of the numbers has won.