How it works
At the fair, Mr. Odd's Lucky Wheel has ten equal slots: nine plain and one gold. One coin buys a spin, and gold pays six coins back.
Counting the slots gives the odds: one gold slot out of ten is one chance in ten to win.
On average, ten spins put in ten coins and give back six, so the stall keeps four. Whoever runs a game like this is called the house.
A short run can look different, but over many turns the house keeps more than it pays out. Odds decide the long run, not luck. It is not a way to get money.