I know, that probably this will sound to be a dumb question but I can't find the solution to it. So if anyone could help please ? 1. The problem statement, all variables and given/known data In a class of 40 pupils, 18 take Mathematics 19 take History 16 take Art 6 take both Mathematics and History 5 take both History and Art 7 take Maths and Art and 3 take any of the 3 subjects (a) Draw a venn diagram to show the given information (b) Use the diagram to find the number of pupils who take all the 3 subjects 3. The attempt at a solution The part " 3 take any of the 3 subjects " confuses me. Edit : If possible post the link to the image of the Venn Diagram with the works.