A Venn diagram displays a universal set containing two overlapping circles labelled A and B. In A only, the number is 25. In the intersection, the number is 33. In B only, the number is 12. The region outside both circles, yet still within the universal set, is 3.
(main)[1]
Find the value of $n((A \cap B)')$.
Worked solution & mark scheme
This 1-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The correct answer is $40$.” …