As the number of sets grows, we need more and more exotic shapes to portray them. One could reasonably argue that beyond four sets of elements, Venn diagrams lose their utility. The four-ellipse ...

Make sure that the number of elements in the Venn diagram is equal to the number of elements in the universal set. Check that a set does not include an element that is not in the universal set.

During a recent interview with Chrissy Teigen, Vice President Kamala Harris said, “I’m going to confess, I love Venn diagrams ...