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Truth Teller and Liar Puzzles Worksheet

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

Answer key

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

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