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 ...

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 ...