Venn diagrams

Question 1

P(AuB)

Answer 1

Combination of the A and B areas.

P(AuB) = P(A) + P(B) - P(AnB)

Question 2

P(A’)

Answer 2

Everything outside of the A area

P(A’) = 1 - P(A)

Question 3

P(AnB)

Answer 3

Only the intersection of the A area and B area

P(AnB) = P(A) x P(B)

Question 4

P(AlB)

Answer 4

The area of A given that it is in the B area

P(AlB) = P(AnB)/P(B)

Question 5

Conditional probability

Answer 5

Successive events that occur after one another (tree diagrams mostly).