By Jerry Stich

Casinos have an edge in almost every game that is on the gaming floor.

In fact, there is only one type of machine that never has an edge for the casino built into it. That machine is the bill changer. Assuming it is working properly, the player always gets 100 percent return – five $20 bills for one $100 bill, four $5 bills for one $20 bill, and so on.

Every other machine on the gaming floor provides an edge for the casino.

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