What Every Bingo Card Is Actually Made Of
A standard bingo card carries a 5-by-5 grid, with each column headed by one letter of the word BINGO. Each column holds a set range of numbers — the B column runs 1 to 15, I covers 16 to 30, N covers 31 to 45, G covers 46 to 60, and O covers 61 to 75. The centre square is a free
space, already marked before the round opens. When a number is called, you daub every matching square on your card. Rooms on phww99 let you hold multiple cards simultaneously, and the auto-daub feature marks them for you so nothing slips past during a fast call sequence.