Stage 32 · Counting, Permutations, Combinations & the Binomial Theorem · 32.1All lessons →
Stage 32 · Counting, Permutations, Combinations & the Binomial Theorem

32.1 The Two Counting Principles: Where All Counting Begins

Build the two basic habits of mind — add when you sort into kinds, multiply when you go step by step — and learn to tell whether a task is a 'sort' or a 'sequence', laying the foundation for permutations and combinations

6 knowledge points
Knowledge point pages
32.1.1 Why Learn to Count32.1.2 The Addition Principle (Counting by Cases)32.1.3 The Multiplication Principle (Counting by Steps)32.1.4 'Cases' or 'Steps'?32.1.5 Tree Diagrams and Listing32.1.6 Putting Both Principles Together
eastmath.com · 32.1 The Two Counting Principles: Where All Counting Begins