Overlap can be key in keno

Mar 10, 2009 4:00 PM
by Keno Lil |

Overlap can occur on any way ticket, or when playing two straight tickets that have some numbers that are common. By overlapping numbers, you will increase the amount you win when you win, but at the expense of winning less often.

There is no kind of keno ticket you can play that will raise win percentage as a player. Using a 2-way-7 as an example (the odds against a solid seven are 1 in 40,979.31), we just lose a fraction of a game in win frequency by playing two straight sevens at one time (14 numbers with no overlap).

For comparisons, we divide the odds on a straight 7-spot ticket to compare with the various 2-way-7s.

7/7 ODDS: 7/7: 20489.66; 6/7: 683.02; 5/7: 57.96; 4/7: 9.73

6/6/1 ODDS: 7/7: 20489.76; 6/7: 683.19; 5/7: 58.16; 4/7: 9.88

5/5/2 ODDS: 7/7: 20490.53; 6/7: 683.96; 5/7: 58.65; 4/7: 10.09

4/4/3 ODDS: 7/7: 20496.38; 6/7: 686.99; 5/7: 59.65; 4/7: 10.35

3/3/4 ODDS: 7/7: 20536.87; 6/7: 697.04; 5/7: 61.41; 4/7: 10.71

2/2/5 ODDS: 7/7: 20798.30; 6/7: 724.47; 5/7; 64.54; 4/7: 11.25

1/1/6 ODDS: 7/7: 22492.40; 6/7: 794.10; 5/7; 71.18; 4/7: 12.44

There is little effect of overlapping down to the 4-4-3 grouping. The 4-4-3 only costs you about eight games on average before hitting a solid seven. Then it’s more serious, with a 38 game loss, a 309 loss and a 2,000 loss on win frequency for the 3-3-4, 2-2-5 and 1-1-6 grouping.

Each game costs $2 so the average cost is an extra $4,000 before hitting each solid seven if you overlap six of the seven numbers you play!

If you have a keno question, please write c/o GamingToday or e-mail me at [email protected].