16-reel slot machines 3f632y

2. Case B – different numbers of stops and symbol distributions on the reels

2.7 A specific symbol at least three times on a payline

The probability of this event is , where are the basic probabilities of that symbol occurring on the reels respectively.

2.9 A specific symbol four times or another specific symbol at least three times on a payline

The probability of this event is , where are the basic probabilities of the two symbols occurring on the reels respectively.

2.10 A specific symbol four times or any combination of that symbol with another specific symbol on a payline

The probability of this event is

, where are the basic probabilities of the two symbols occurring on the reels respectively.