Logic puzzles
Most logic puzzles are built around an answer that feels right before you have finished reading. The defence is a habit: notice the fast answer, then check what the words actually let you conclude.
What you'll learn
11 chapters, then the quiz
- 01How puzzles trick youTwo systems, one of them impatient.
- 02All, some and noneWhat a statement about a group licenses.
- 03If, thenRules run one way only.
- 04Common fallaciesNamed mistakes are easier to spot.
- 05Number sequencesA checklist for finding the rule.
- 06Words into equationsName the unknown and write the sentence down.
- 07Rate and work problemsMachines, taps and painters.
- 08Elimination gridsThe classic five houses puzzle.
- 09Knights, knaves and self referenceStatements about the speaker.
- 10Reading exactlyThe trap is usually in one word.
- 11Building the habitHow to get better at these.
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 - Medium
Probability basics
Coins, dice and cards, plus the traps that come with them.
7 questions7 min - Medium
Algebra fundamentals
Rearranging, solving and reading what an equation is telling you.
8 questions7 min