Top Bottom Keno Introduction & Analysis

Top Bottom Keno is a keno game player who can choose from 1 to 40 or 41 to 80. He is compensated based on the number of catches he makes in the selected half.

Rules of Top Bottom Keno

• The player must choose between Top and Bottom. If the player decides Top, he must cover numbers 1 through 40. If he chooses Bottom, the odds are 41 to 80.
• A pool of balls numbered 1 ~ 80 will draw 20 balls at random and without substitution.
• The player will be compensated based on how many balls from the 20-ball draw land in his or her chosen half. The number of catches is a term used to describe this. Below is an example of a paytable.

Analysis of Top Bottom Keno
The probability and the return of all possible numbers of catches from 0 to 20 are shown in the table below. The return in the lower right cell is 88.32%.