Here are three Venn Diagram Questions you may like to attempt before watching a video solution to the first and viewing written solutions to all three.
Venn Diagram Question from Jan 2004 (6:10)
Venn Diagram Probabilites Solutions
The Venn Diagram 11 mark question is one where the diagram will require probabilities rather than raw data in the circles. Set notation will be used. Here is a comprehensive exercise of 8 questions on this topic.
Venn Diagram practice questions