Bingo card of Bingo a winning card may be the first person to complete row #3. Because the "N" column contains a free space, the maximum number of cards that guarantee a unique winner is (15*15*15*15) = 50,625. Because the players need to only focus on row #3, the remaining numbers in rows #1, #2, #4, and #5 are statistically insignificant for purposes of game play and can be selected in any manner as long as no number is duplicated on any card. Perhaps the most common pattern set, known as "Straight-line Bingo" is completing any of the five rows, columns, or
National Bingo Game and the National Prize is presently in the region of £5,000–25,000, depending upon the day of the week and session played, plus the Jackpot Prize – see § New Game. Many players prefer to purchase a strip of six tickets, as this guarantees that all numbers 1–90 appear on the strip, so the players know that they will be marking the strip each and every time a number is called. Technology has improved since the game began in 1986 and currently ADSL secure internet connection is used to collect and distribute data. The National Bingo Game has been in operation