From the probabilities shown in this Venn diagram determine

From the probabilities shown in this Venn diagram, determine the probabilities of the following events. A occurs and B does not occur.

Solution

As we see in the figure, those inside A but not inside B is just the number 0.25 (left most).

We don\'t include 0.20 at the middle because it is already inside B, although it is inside A.

Thus,

P(A and not B) = 0.25 [answer]