If you play a single spot in keno, your odds of hitting are 3-to-1 against. Play two spots and you are about 16-to-1 against to hit.
If you play three spots, your odds of hitting all three are 71-to-1 and of hitting two about 6-to-1. For four spots, you are 325-to-1 against to hit all four and 22-to-1 to hit three.
Hitting five spots out of five is a 1,550-to-1 long shot, four out of five is 81-to-1 and three out of five is 11-to-1. The odds of going six for six are 7,752-to-1, while five out of six is 322-to-1 and four out of six is 34-to-1.
For seven spots, a clean sweep will happen very rarely, at 40,978-to-1, but you are 18-to-1 to get at least four out of the seven. Eight out of eight is 230,114-to-1 against with an 11-to-1 chance of hitting at least four. Chances of hitting all the spots when picking nine or more numbers gets into the astronomical range.
House Edge in Keno
The House edge in keno will depend on the payout odds for each number of spots relative to their true odds. However, the worst edge is almost always for picking one spot, which is usually about a 25 percent edge for the House. Most other numbers of spots fall in the five percent to eight percent range.
You should look at a few different keno sites to see which ones offer the best payout odds for the amount of spots you like to play. This will result in the lowest House edge.
More Keno Tips
Many people like to play a middle amount of numbers, like seven, eight or nine. This allows a chance at a big price depending on the rules, but it can still result in a decent payout if you only catch a few spots.