[Den]

Speaking as someone who once worked in a casino, the odds are always stacked heavily in the house's favor. They have people whose specialties are in winning money for the house (I know this because I was one of them. I would be put on tables when the pit wanted to close down those tables for the night, because I handily won for the house pretty much every time I dealt) on the tables, and the slots aren't much better. Even if you figure out on slots which machines are "hot" or "cold", you're still going to spend much more than you'll win back.