Our opening quote contended that Venn diagrams are overrated. Even those who agree must admit that they have a curious allure. Take the sets of interesting topics in logic, in geometry and in ...

The Venn diagram shows 2 intersecting circles, one labeled Africa 93 and the other labeled Asia 155. The area of intersection is labeled 70.

The Venn diagram shows the information from the survey. 13 people have got a dog. The circle for the set of people with a dog has 5 people who just have a dog and 8 people who have both a cat and ...