Probability
Probability — addition and multiplication rules, tree diagrams, Venn diagrams, conditional probability, Bayes' theorem.
Start practising →Sample questions
- Hard Bayes' theorem Calculator [6]
- Medium Conditional probability from a table Calculator [5]
- Medium Tree diagram without replacement Calculator [6]
About this topic
These are original, exam-style questions written to match the IB Mathematics syllabus for Analysis & Approaches HL. Every question comes with a full step-by-step worked solution showing the method, with mark allocations matching real IB marking schemes. Questions are labelled Paper 1 (no calculator) or Paper 2 (calculator allowed) so you practise under realistic exam conditions.
How to practise
- Open the question bank using the button above.
- Attempt the question, writing out your working.
- Reveal the full worked solution and compare your method step by step.
- Use the difficulty and calculator filters to focus on what you need most.