**16-reel slot machines**

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

** 2.1
Event **** –
A specific symbol four times on a payline**

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

**2.3 Event
–
A specific symbol exactly three times on a payline**

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

**2.5 Event
–
Any combination of two specific symbols on a payline**

The probability of **
**is

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