Let us draw a Venn diagram. From the diagram, 3 students study all the three subjects. Therefore, the correct option is [2]. Example: How many study only one of the three subjects? [1] 21 [2] 30 ...

Venn diagrams - Example question Take a look at a different problem solving exercise using Venn diagrams. Remember to draw the Venn diagram and add information as you go along.

Solving problems using Venn diagrams You may be asked to solve problems using Venn diagrams in an exam. It is really important you draw the Venn diagram and add information as you go along.