Bingo card S. Lowe contracted Columbia University professor Carl Leffler to create 6,000 random and unique Bingo cards. The effort is purported to have driven Leffler insane. Manual random permutation is an onerous and time-consuming task that limited the number of Bingo cards available for play for centuries. The calculation of random permutations is a matter of statistics principally relying on the use of factorial calculations. In its simplest sense, the number of unique "B" columns assumes that all 15 numbers are available for the first row. That only 14 of the numbers are available for the second row (one having been
Roadkill bingo of Loveland, CO sells a version of the game that uses reusable static cling squares to cover the animals, old tires and smells on the game board. Roadkill Bingo is a registered trade name owned by the Roadkill Bingo Company. As in regular bingo, the object of the game is to spot a sequence of five dead animals which are in the same row or column on the bingo card. At the instant that five in a row is achieved, that player is obligated to yell "bingo", loudly and clearly, and the player is said to have "got a bingo."