Strategy is not a word that is used much in bingo circles. There are really no strategies for wining bingo in the usual sense of the word. Bingo is a game of chance, like a lottery is. Whether the game is one of seventy-five numbers or of ninety numbers, the selection of the number called is a random event in a fair casino game. The selection of each number is an independent event. The ball that is drawn is not related to any other balls that were drawn. The selection of each ball is independent of every other ball in a fair game.  Another way of saying this is that the outcome of each draw is random and independent of every other ball drawn. If all of the balls are equally weighted, then each draw is a random event and the UK gambling game is a fair game.  If the balls are not equally weighted then the lighter balls will be drawn more frequently than the heavier balls. In this case, the game is not a fair game because the lighter balls have a greater probability of being drawn than the heavier balls do.

When the game is a fair game with a lottery type game, as bingo is, then there is no way the player can affect the outcome. There is nothing he can do to increase his chances of winning. This means that there is no game or playing strategy that the player can use to increase the chances of winning.