This strategy is only suitable for playing traditional bingo (calculated for 75 balls and standard line). The strategy for the so-called "British" Bingo was developed, which is quite natural, as British scientists - some L. Tippett, who specialized in statistics and even produced several scientific papers on the role of science in gambling. The essence of Tippett's strategy is quite simple: scientists claim that the probability of certain numbers increases with the duration of the game. According to the theory formulated by Tippett, the longer the game, the higher the probability that one will drop out of the room, close to 38 (as to the average number in the range from 1 to 75).
Thus, the basis of the strategy Tippett - choose the cards for a game of bingo, in which as many rooms, close to 38 (unless, of course, the game is prolonged in time). If by the time the game a brief, Tippett's strategy is not particularly relevant, and you can choose from the standard cards to play bingo with any number from 1 to 75.