Answer:
Step-by-step explanation:
Given
there are 13 symbols in slot machines i.e. 1 bar , 2 lemons , 2 bells ,2 plums ,3 cherries , 3 oranges 
there are Total of 3 machines 
Probability of getting bar in machine is 
Probability of getting 3 bar on 3 machine
Probability of getting an orange
Probability of getting 3 oranges  on 3 machine
Probability of getting a Plum
Probability of getting 3 Plums  on 3 machine