Number patterns
A sequence is a list with a reason. This course is a method for finding that reason, and a tour of the patterns that keep appearing in mathematics and in the world.
What you'll learn
10 chapters, then the quiz
- 01Finding the ruleA checklist that solves most sequences.
- 02Arithmetic sequencesAdding the same amount.
- 03Geometric sequencesMultiplying by the same amount.
- 04Sequences worth knowingThe ones that keep appearing.
- 05Primes and factorsThe building blocks.
- 06Writing the nth termFrom a list to a formula.
- 07Patterns from shapesNumbers you can draw.
- 08Recursive rulesDefined in terms of itself.
- 09Patterns outside mathematicsWhere the sequences show up.
- 10Solving pattern puzzlesTests and interviews.
More math & logic tests
See all →- Easy
Mental math sprint
Arithmetic you should be able to do without reaching for a calculator.
8 questions5 min - Hard
Logic puzzles
Short problems where the obvious answer is usually the wrong one.
7 questions9 min - Medium
Probability basics
Coins, dice and cards, plus the traps that come with them.
7 questions7 min