Death pools usually involve well-known individuals, such as celebrities and sports figures, which the participants predict will die within a certain period of time.
The concept was introduced in Britain in 1923 by Littlewoods Pools where it was known as toto[clarification needed] and based on football matches.
Leading up to the NCAA Men's Division I Basketball Championship, contestants fill out forms that predict who will win.
A traditional betting pool takes place during the Super Bowl, where entrants make random picks for the score of the game.
Then after the grid is filled, the rows and columns are assigned a digit (0-9) which corresponds to the final number in the score of each team.