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75-ball bingo cards. Players use cards that feature five columns of five squares each, with every square containing a number (except the middle square, which is designated a "FREE" space). The columns are labeled "B" (numbers 1 15), "I" (numbers 16 30), "N" (numbers 31 45), "G" (numbers 46 60), and "O" (numbers 61 75).
an expression of surprise and, usually, pleasure, for example when something happens successfully: I was just about to borrow some money when bingo! - the cheque arrived. I was just about to give up waiting when bingo!