Each alphabet in the word BINGO is allotted a specific value - for example, B-10, I-25, N-40, G-55, O-70. Numbers 1 to 15 are assigned to B column, 16 to 30 to I column, 31 to 45 to N column, 46 to 60 to G column, and 61 to 75 to O column.
Also Canadian and American bingo palace games often allow multiple bingos - for example, the players may first play for a single line, then after that is called continue playing for a full card, then for a consolation full card.
In the British and Australian versions, online bingo cards have 3 rows and 9 columns. 5 squares in each row contain the numbers 1 to 90 and the rest are left empty. The numbers are called out rapidly so that the players hardly get time to play more than one book or 6x cards. A bingo book is a set of six cards and has the numbers from 1 to 90, the order being 15 numbers on each card, 5 numbers in each row. The first column comprises single numbers; the second contains tens, the third twenties, and so on. Number 90 is placed in the ninth column along with the eighties. Each card is equipped with a unique serial number to allow easy verification by the computer.