In set notation this is B = {1, 4, 9}. 30 people answered a survey about whether they have a dog or a cat. The Venn diagram shows the information from the survey. 13 people have got a dog.

A Venn diagram in math can show how various sets of numerical data overlap with one another. To take a simple example, if one circle represents every number between 1 and 25 and another represents ...

One could reasonably argue that beyond four sets of elements, Venn diagrams lose their utility. The four-ellipse image is already pretty chaotic. Maybe for five-plus sets we should abandon visual ...

I haven’t done a roundup of Venn diagrams in several years. That’s a graph that shows sets and all possible overlaps of those sets. It works two-dimensionally when there are three or fewer sets.

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 new rose has blossomed in the garden of mathematics: a flowery Venn diagram for 11 sets of objects. Venn diagrams use overlapping circles to show all possible relationships between sets.