A logician vacationing in the South Seas finds himself on an island inhabited by the two proverbial tribes of liars and truth-tellers. Members of one tribe always tell the truth, members of the other always lie. He comes to a fork in a road and has to ask a native bystander which branch he should take to reach a village. He has no way of telling whether the native is a truth-teller or a liar. The logician thinks a moment, then asks one question only. From the reply he knows which road to take. What question does he ask?
Source: Gardner, Martin. My Best Mathematical and Logic Puzzles
Happy problem solving!
Email your solutions to [email protected]
About the author
-
Zach Marinovhttps://etonstem.com/author/zach
-
Zach Marinovhttps://etonstem.com/author/zach
-
Zach Marinovhttps://etonstem.com/author/zach
-
Zach Marinovhttps://etonstem.com/author/zach
Related posts
Personal
Categories
- Engineering (6)
- Enrichment (3)
- Essays (5)
- General (5)
- Interviews (7)
- Maths (15)
- Problem of the Week (28)
- Science (44)
- Sustainability (7)
- Technology (19)