For example, if one circle represents every number between 1 and 25 and another represents every number between 1 and 100 that is divisible by 5, the overlapping area would contain the numbers 5 ...

Rotate a two-circle Venn diagram by 180 degrees (or a three-circle one by 120 degrees), and it looks the same. ... Thus began a contest to find larger and larger examples.

Slide 1 of 10, Example one.Notation and regions in a Venn diagram. An image of a Venn diagram with two intersecting circles. The circle on the left is labelled, A.

Venn used the diagrams to prove a form of logical statement known as a categorical syllogism. This can be used to model reasoning. Here’s an example: “All computers need power.