A group of 50 investors own properties in north European cities. The following Venn diagram shows how many investors own properties in Amsterdam, Brussels, or Cologne. One of the investors is chosen at random.

a) Find P(B \ A).
b) Find P(C| A).
c) Interpret your answers for a and b.
d) You are given that P(C | B) = 10/23 and P(A | C) = 1/3
Calculate the remaining regions shown in the Venn diagram.