What is Bingo?
Bingo is a game of chance with card which has a matrix of numbers, one person (caller) get a random number from a recipient and shout it. If you have that number if your card, you mark it. The first person to mark all required combination of numbers wins.
It depends each variation of the game you are playing but, if for example the goal is a horizontal line, the first person to mark all numbers of an horizontal line in a card wins.
British bingo games have cards of 5x3 numbers, American bingo uses 5x5 cards to play the game.