**Example 1:**

A fruit bowl contains 5 bananas, 4 apples, 1 orange and 2 peaches. If I choose a
fruit from the bowl, find:

(a) Pr( choosing a banana)

(b) Pr( choosing a peach or an apple )

(c) Pr(not choosing an apple)

Let's take B for bananas, number of bananas n(B) = 5

A for
apples, number of apples n(A) = 4

O for
orange, number of oranges n(O) = 1

P for
peaches, number of peaches n(P) = 2

The total number of fruits in the fruit bowl is 12. n(S) = 12

So, the Pr( choosing a banana) = Pr(B)