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IKMC 2013 - Grades 11-12 - Paper 02 - Self-study Question 28

IKMC · IKMC 2013 - Grades 11-12 - Paper 02 - Self-study

Question 28

On an island, Truthtellers always tell the truth and Liars always lie. I asked the taller of two men whether both were Truthtellers. His reply did not let me determine their types. I then asked the shorter whether the taller was a Truthteller. After his reply I knew both types. What were they?
  1. Both Truthtellers
  2. Both Liars
  3. Taller Truthteller, shorter Liar
  4. Taller Liar, shorter Truthteller
  5. Insufficient information