Deductive Reasoning V — Hat Puzzles and Common Knowledge
Difficulty 5 out of 5 · 12 questions · about 18 minutes
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Mode
- Practice: See the correct answer and a full explanation right after each question.
- Exam: No feedback during the test — see your full results at the end.
About this test
A group of people, each seeing everyone else's hat but not their own. From what they announce — or their silence — you can deduce information nobody told you directly: the mechanism behind the classic hat puzzles and "common knowledge" reasoning popularized by Martin Gardner.
Other Deductive Reasoning tests
- Deductive Reasoning I
- Deductive Reasoning II — Knights & Knaves
- Deductive Reasoning III — Chained Syllogisms
- Deductive Reasoning IV — Elimination Puzzles
- Deductive Reasoning VI — Recreational Arithmetic Puzzles
- Deductive Reasoning VII
- Deductive Reasoning VIII