Exact probabilities for every pick count, computed from combinations, not rounded estimates.
Keno odds are based on combinations. In a common 80-number keno game, 20 numbers are drawn. Your chance of a hit count depends on how many numbers you picked and how many of those picks appear in the draw.
The setup
Every round draws 20 numbers from 80 without replacement. A ticket picks 1 to 10 numbers, and the payout depends on how many picks land among the 20 drawn. The tables below list the exact probability of each hit count for every pick count, the same math our odds calculator runs on demand. For paper, the printable odds card fits the 4-spot through 10-spot tables on a single page.