I know some people track keno numbers for their state, trying to use that to pick "more likely" winning numbers (it doesn't work that way, but there's no harm in believing it).
I'm in Reno and today I played machine keno. Pick 4 spots pays 2, 5, 100 if you match 2,3,4, respectively (a 95% return).
My question to the audience is:
If you believe keno numbers repeat, how would you do this at a keno machine? A drawing occurs by you hitting the button "DRAW", and it takes about 5 seconds.
Would you write down the numbers? That would take some time, plus casino security might not like that. Would you try to notice top/bottom, edge, etc. (i.e. some kind of pattern you can notice and remember without delay and without pen & paper)?
I picked 14,15,24,25 and didn't hit 4 in 4 once in about 30 drawings. For the last one, I decided to do quick pick and still lost.
Had I hit 4 of 4, my win would be exactly equal to my bankroll (i.e. break even on the last drawing, profit for anything else). Oh well I tried.
BTW the probability of hitting 4 of 4 is 0.3063%.