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 ...

Learn about finding probabilities from Venn diagrams with this BBC Bitesize Maths article. For students between the ages of 11 and 14.

This is a preview. Log in through your library . Abstract An influence diagram is a graphical representation of a decision problem that is at once a formal description of a decision problem that can ...

John Venn: The man behind the famous diagrams – and why his work still matters today One of Venn’s major achievements was to find a way to visualise a mathematical area called set theory.