How to Calculate the Odds of Winning a Slot Machine

A narrow opening or hole in something: a door with a slot; the slot through which mail is delivered; the slot in a car’s bumper. Also a position, opportunity, or chance to do something: The slot for the new manager opened up.

A number or slot in a list or table: a six-digit number in a zip code; the position on a team’s roster that a rookie has earned. Also a type of expansion slot found on a motherboard, especially ISA, PCI, and AGP slots.

The probability of hitting a particular outcome: In this article, we consider an online three-reel game with six symbols per reel and only one coin, so the number of possible outcomes is six x six x six = 216. We then use this information to calculate the odds of winning a specific pay table’s payouts.

In the past, electromechanical slot machines would have tilt switches that allowed operators to determine if a machine was being tampered with and therefore unable to pay out. Now, random number generators are used to provide a series of results that contribute to odds that drive payback percentages – the same way that tables games work – although it is important to remember that the odds do not equal chances of winning. This is why we see big winners at slots from time to time.