Question

Roland is picking out a snack. He has an apple, a pear​, a banana, and an orange to choose from. Roland is going to pick one at random and wants to know what the chance that he will pick a bananna? Identify the​ action, the sample​ space, and the event.

Answer 1

Ω = 4 set all equally probable events
     aplle, pear,banana, orange
A = 1  random event favorable    
       banana


$P(A) = \frac{A}{omega} = \frac{1}{4}$

Roland choose once and has one chance in four that will draw the coveted banana. Therefore, the probability of this event is 1/4

Answer 1/4    

Answer 2

Since there are 4 options and only 1 banana, there is a 1/4 chance he will pick a banana. I'm not sure what you mean by the last few questions? I think the sample space is an apple, pear, banana, or an orange. And the event is banana?