Keno is a game of chance like lottery and bingo. Being simple to understand, it is often played in casinos and bingo halls. A player chooses between numbers 1 and 20 and marks a Keno sheet, which contains 80 numbers (1 to 80). The casino then draws 20 numbers at random. The player receives an amount depending on the number of matches.
This game gives a significant advantage to the casino, up to 66% on certain paris.
It seems that Keno originated in ancient China during the Han Dynasty between 205 and 187 BC. Chinese immigrants brought the game to the United States in the nineteenth century. In order to represent the chosen and drawn numbers, it was used the first characters of Qianziwen, the Classic of Thousand Characters.