In this lesson you will learn how to calculate conditional probability using Venn diagrams that contain 2 sets.

The questions that are covered in this lesson are, Paul did a survey to see if people had a cat, c or a dog, d. The results are shown in the venn diagram. 1 person is chosen at random. i) Work out P(c $\cap$ d/d). ii) Work out P(c $\cap$ d/c).