90 pupils were asked whether they owned a laptop or a tablet device. 52 said they owned a laptop. 45 said they owned a tablet. 23 said they owned both. Find the probability that a pupil chosen at ...

Calculating probabilities using Venn diagrams can often lead to confusion. Here, maths expert Colin Foster lays out a lesson plan that will set students straight… What’s the issue with Venn diagrams ...

A Venn diagram is a way of grouping different items. These groups are known as sets. We have a set of golf clubs or a set of dishes – these are just groups of those items. We write a set using a ...

Neil Gordon does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their ...