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Liars and Truthtellers

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Author:Math Forum, a Classic Problem from the Ask Dr. Math FAQ
Description: A princess visits an island inhabited by two tribes. Members of one tribe always tell the truth, and members of the other tribe always lie. What question should the princess ask the natives to find out the right road to take?

Levels: Elementary, Middle School (6-8), High School (9-12)
Languages: English
Resource Types: Problems/Puzzles
Math Topics: Logic/Foundations

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