Venn diagrams are a useful tool in the world of statistics. Once you have got to grips with these, you will be able to arrange all sorts of groups and sets. Part of Maths Numeracy (WJEC) Number ...

Venn diagrams typically use overlapping circles to show all possible relationships between sets. Traditionally, they include just two or three sets. This example shows how red, blue and green ...

A Venn diagram of two sets - a set A of articles that do contain themselves, and a set B of articles that don’t. The problem is that it cannot be on the left, as it would contain itself, and ...