IB Math AHL 1.10 - Counting Principles

This IB Mathematics AA HL AHL 1.10 Counting Principles slidedeck introduces students to key techniques in counting, permutations, and combinations, fully aligned with IB Maths AA HL Topic 1. It develops the counting principle and factorial notation through clear, structured examples, building strong foundations for exam-style reasoning .

The resource distinguishes between situations where order matters (permutations) and does not matter (combinations), deriving formulae logically from slot-based thinking. A higher-level section extends to the extended binomial theorem and generalised binomial coefficients, with practice on finding specific terms and coefficients. Exam-style problems encourage multi-step application and deeper analytical thinking suitable for HL students .