6 people have seen Band Z and Band X, we can now fill this in on our Venn diagram. Finally, if we now look at the Band X circle, we have all the sections complete except for one. Let’s add up ...

A Venn diagram shows the relationship between a group ... the number of children in your class who have brown hair in one circle, and the number of children in your class who wear glasses in ...

Venn became fascinated with Boole’s new approach to logic and in finding a way to ... of each of the premises in the three ...