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Truth Teller and Liar Puzzles Worksheet

Logical reasoning lesson 24: Truth-tellers and liars · Set 27 · 40 questions
TalentJR

How to think it through (Suppose and check): Suppose the first speaker is a truth-teller: their words are true. Work out what that says about the others. Check every statement. A truth-teller’s words must be true; a liar’s words must be false. If you hit a clash, switch the supposition. The possibility with no clash is the answer.

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  1. 1.Each person always tells the truth or always lies. Farhan says: “Manav and I are different kinds.” Manav says: “Farhan and I are the same kind.” Is Farhan a truth-teller or a liar? (a) truth-teller (b) liar
  2. 2.Each person always tells the truth or always lies. Meera says: “Priya is a liar.” Kabir says: “Priya is a liar.” Priya says: “At least one of us two, Meera or I, is a liar.” Is Kabir a truth-teller or a liar? (a) truth-teller (b) liar
  3. 3.Each person always tells the truth or always lies. Aditya says: “Meera and I both tell the truth.” Meera says: “Aditya is a liar.” Is Aditya a truth-teller or a liar? (a) truth-teller (b) liar
  4. 4.Each person always tells the truth or always lies. Kabir says: “Riya and I both tell the truth.” Isha says: “Kabir tells the truth.” Riya says: “At least one of us two, Kabir or I, is a liar.” Is Kabir a truth-teller or a liar? (a) truth-teller (b) liar
  5. 5.Each person always tells the truth or always lies. Saanvi says: “Aditya and I are the same kind.” Aditya says: “Aarav tells the truth.” Aarav says: “Saanvi and I are different kinds.” Is Aarav a truth-teller or a liar? (a) truth-teller (b) liar
  6. 6.Each person always tells the truth or always lies. Ira says: “Ananya tells the truth.” Ananya says: “Karan and I are different kinds.” Karan says: “Ira tells the truth.” Is Ananya a truth-teller or a liar? (a) truth-teller (b) liar
  7. 7.Each person always tells the truth or always lies. Vivaan says: “At least one of us two, Omkar or I, is a liar.” Saanvi says: “Omkar is a liar.” Omkar says: “Vivaan and I both tell the truth.” Is Vivaan a truth-teller or a liar? (a) truth-teller (b) liar
  8. 8.Each person always tells the truth or always lies. Ananya says: “Arjun and I are different kinds.” Arjun says: “Ananya and I are the same kind.” Is Ananya a truth-teller or a liar? (a) truth-teller (b) liar
  9. 9.Each person always tells the truth or always lies. Neel says: “Farhan and I are the same kind.” Farhan says: “At least one of us two, Neel or I, is a liar.” Is Farhan a truth-teller or a liar? (a) truth-teller (b) liar
  10. 10.Each person always tells the truth or always lies. Aditya says: “At least one of us two, Karan or I, is a liar.” Karan says: “Aditya and I both tell the truth.” Is Aditya a truth-teller or a liar? (a) truth-teller (b) liar
  11. 11.Each person always tells the truth or always lies. Riya says: “Arjun is a liar.” Farhan says: “Riya and I are different kinds.” Arjun says: “Farhan tells the truth.” Is Arjun a truth-teller or a liar? (a) truth-teller (b) liar
  12. 12.Each person always tells the truth or always lies. Kabir says: “Manav is a liar.” Manav says: “At least one of us two, Kabir or I, is a liar.” Is Kabir a truth-teller or a liar? (a) truth-teller (b) liar
  13. 13.Each person always tells the truth or always lies. Tara says: “Aarav and I are different kinds.” Aarav says: “Tara and I are different kinds.” Pooja says: “Tara is a liar.” Is Aarav a truth-teller or a liar? (a) truth-teller (b) liar
  14. 14.Each person always tells the truth or always lies. Isha says: “Kavya and I are the same kind.” Kavya says: “Isha is a liar.” Is Isha a truth-teller or a liar? (a) truth-teller (b) liar
  15. 15.Each person always tells the truth or always lies. Arjun says: “Aisha tells the truth.” Aisha says: “Arjun and I are the same kind.” Is Aisha a truth-teller or a liar? (a) truth-teller (b) liar
  16. 16.Each person always tells the truth or always lies. Tara says: “Farhan and I are the same kind.” Farhan says: “Tara and I are different kinds.” Is Farhan a truth-teller or a liar? (a) truth-teller (b) liar
  17. 17.Each person always tells the truth or always lies. Pooja says: “Ira and I are the same kind.” Ira says: “Pooja and I are different kinds.” Is Ira a truth-teller or a liar? (a) truth-teller (b) liar
  18. 18.Each person always tells the truth or always lies. Aditya says: “Aarav is a liar.” Aarav says: “Neel and I are the same kind.” Neel says: “Aditya tells the truth.” Is Aditya a truth-teller or a liar? (a) truth-teller (b) liar
  19. 19.Each person always tells the truth or always lies. Ira says: “Arjun and I both tell the truth.” Arjun says: “At least one of us two, Ira or I, is a liar.” Is Arjun a truth-teller or a liar? (a) truth-teller (b) liar
  20. 20.Each person always tells the truth or always lies. Sneha says: “Arjun and I are different kinds.” Arjun says: “Sneha tells the truth.” Is Arjun a truth-teller or a liar? (a) truth-teller (b) liar
  21. 21.Each person always tells the truth or always lies. Nisha says: “Aarav and I are the same kind.” Aarav says: “Nisha tells the truth.” Is Nisha a truth-teller or a liar? (a) truth-teller (b) liar
  22. 22.Each person always tells the truth or always lies. Ira says: “Ishaan and I are the same kind.” Ishaan says: “Ira and I are the same kind.” Is Ishaan a truth-teller or a liar? (a) truth-teller (b) liar
  23. 23.Each person always tells the truth or always lies. Myra says: “Rohan and I are different kinds.” Rohan says: “Myra and I are different kinds.” Pooja says: “Rohan and I both tell the truth.” Is Myra a truth-teller or a liar? (a) truth-teller (b) liar
  24. 24.Each person always tells the truth or always lies. Kavya says: “Karan and I both tell the truth.” Omkar says: “Kavya and I are different kinds.” Karan says: “At least one of us two, Omkar or I, is a liar.” Is Karan a truth-teller or a liar? (a) truth-teller (b) liar
  25. 25.Each person always tells the truth or always lies. Yash says: “Rohan and I are the same kind.” Rohan says: “Yash and I are different kinds.” Is Yash a truth-teller or a liar? (a) truth-teller (b) liar
  26. 26.Each person always tells the truth or always lies. Isha says: “Pooja and I both tell the truth.” Pooja says: “Aditya and I are different kinds.” Aditya says: “Isha is a liar.” Is Pooja a truth-teller or a liar? (a) truth-teller (b) liar
  27. 27.Each person always tells the truth or always lies. Rohan says: “Ananya and I are different kinds.” Ananya says: “Rohan is a liar.” Is Ananya a truth-teller or a liar? (a) truth-teller (b) liar
  28. 28.Each person always tells the truth or always lies. Farhan says: “At least one of us two, Kabir or I, is a liar.” Vivaan says: “Kabir and I both tell the truth.” Kabir says: “Farhan and I both tell the truth.” Is Farhan a truth-teller or a liar? (a) truth-teller (b) liar
  29. 29.Each person always tells the truth or always lies. Dev says: “Neel is a liar.” Neel says: “Dev and I both tell the truth.” Is Neel a truth-teller or a liar? (a) truth-teller (b) liar
  30. 30.Each person always tells the truth or always lies. Rahul says: “Siddharth is a liar.” Siddharth says: “Nisha and I both tell the truth.” Nisha says: “Rahul and I are different kinds.” Is Nisha a truth-teller or a liar? (a) truth-teller (b) liar
  31. 31.Each person always tells the truth or always lies. Aarav says: “Kavya and I are the same kind.” Kavya says: “Aarav and I both tell the truth.” Is Aarav a truth-teller or a liar? (a) truth-teller (b) liar
  32. 32.Each person always tells the truth or always lies. Kavya says: “Priya and I are the same kind.” Priya says: “Kavya and I are different kinds.” Is Kavya a truth-teller or a liar? (a) truth-teller (b) liar
  33. 33.Each person always tells the truth or always lies. Meera says: “Aisha is a liar.” Aisha says: “At least one of us two, Meera or I, is a liar.” Is Meera a truth-teller or a liar? (a) truth-teller (b) liar
  34. 34.Each person always tells the truth or always lies. Karan says: “At least one of us two, Kavya or I, is a liar.” Kavya says: “Karan is a liar.” Meera says: “Karan tells the truth.” Is Kavya a truth-teller or a liar? (a) truth-teller (b) liar
  35. 35.Each person always tells the truth or always lies. Arjun says: “Kavya tells the truth.” Kavya says: “Arjun and I are the same kind.” Is Arjun a truth-teller or a liar? (a) truth-teller (b) liar
  36. 36.Each person always tells the truth or always lies. Omkar says: “At least one of us two, Dev or I, is a liar.” Dev says: “Omkar and I are the same kind.” Is Dev a truth-teller or a liar? (a) truth-teller (b) liar
  37. 37.Each person always tells the truth or always lies. Sneha says: “Tara and I are the same kind.” Tara says: “At least one of us two, Sneha or I, is a liar.” Is Sneha a truth-teller or a liar? (a) truth-teller (b) liar
  38. 38.Each person always tells the truth or always lies. Siddharth says: “Karan and I are the same kind.” Karan says: “Siddharth is a liar.” Is Karan a truth-teller or a liar? (a) truth-teller (b) liar
  39. 39.Each person always tells the truth or always lies. Aarav says: “Farhan and I both tell the truth.” Farhan says: “Aarav is a liar.” Is Farhan a truth-teller or a liar? (a) truth-teller (b) liar
  40. 40.Each person always tells the truth or always lies. Manav says: “Rahul and I are the same kind.” Rahul says: “Manav and I are different kinds.” Is Rahul a truth-teller or a liar? (a) truth-teller (b) liar

Answer key

  1. truth-teller
  2. liar
  3. liar
  4. liar
  5. truth-teller
  6. liar
  7. truth-teller
  8. truth-teller
  9. truth-teller
  10. truth-teller
  11. truth-teller
  12. liar
  13. liar
  14. liar
  15. truth-teller
  16. truth-teller
  17. truth-teller
  18. truth-teller
  19. truth-teller
  20. liar
  21. truth-teller
  22. truth-teller
  23. liar
  24. truth-teller
  25. liar
  26. truth-teller
  27. liar
  28. truth-teller
  29. liar
  30. truth-teller
  31. truth-teller
  32. liar
  33. liar
  34. liar
  35. truth-teller
  36. liar
  37. liar
  38. truth-teller
  39. truth-teller
  40. truth-teller

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