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Truth Teller and Liar Puzzles Worksheet

Logical reasoning lesson 24: Truth-tellers and liars · Set 43 · 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. Rohan says: “Rahul and I are the same kind.” Rahul says: “Nisha is a liar.” Nisha says: “Rohan is a liar.” Is Rohan a truth-teller or a liar? (a) truth-teller (b) liar
  2. 2.Each person always tells the truth or always lies. Riya says: “Siddharth and I are different kinds.” Siddharth says: “Riya and I are the same kind.” Aarav says: “At least one of us two, Siddharth or I, is a liar.” Is Riya a truth-teller or a liar? (a) truth-teller (b) liar
  3. 3.Each person always tells the truth or always lies. Aarav says: “Dev and I are the same kind.” Dev says: “Aarav and I are the same kind.” Is Aarav a truth-teller or a liar? (a) truth-teller (b) liar
  4. 4.Each person always tells the truth or always lies. Nisha says: “Diya tells the truth.” Diya says: “Nisha and I are the same kind.” Is Diya a truth-teller or a liar? (a) truth-teller (b) liar
  5. 5.Each person always tells the truth or always lies. Kavya says: “Zoya tells the truth.” Zoya says: “Kavya and I are different kinds.” Is Kavya a truth-teller or a liar? (a) truth-teller (b) liar
  6. 6.Each person always tells the truth or always lies. Arjun says: “Meera and I are different kinds.” Meera says: “Arjun and I are different kinds.” Is Arjun a truth-teller or a liar? (a) truth-teller (b) liar
  7. 7.Each person always tells the truth or always lies. Myra says: “Pooja and I are different kinds.” Pooja says: “Myra and I are the same kind.” Is Pooja a truth-teller or a liar? (a) truth-teller (b) liar
  8. 8.Each person always tells the truth or always lies. Ananya says: “Sneha and I both tell the truth.” Sneha says: “Ananya is a liar.” Is Ananya a truth-teller or a liar? (a) truth-teller (b) liar
  9. 9.Each person always tells the truth or always lies. Farhan says: “Ira and I are different kinds.” Ira says: “Farhan and I are different kinds.” Is Ira a truth-teller or a liar? (a) truth-teller (b) liar
  10. 10.Each person always tells the truth or always lies. Yash says: “Farhan and I both tell the truth.” Farhan says: “At least one of us two, Yash or I, is a liar.” Is Yash a truth-teller or a liar? (a) truth-teller (b) liar
  11. 11.Each person always tells the truth or always lies. Dev says: “Pooja and I are the same kind.” Pooja says: “Dev is a liar.” Is Dev a truth-teller or a liar? (a) truth-teller (b) liar
  12. 12.Each person always tells the truth or always lies. Diya says: “Sneha and I are the same kind.” Sneha says: “Diya and I are different kinds.” Is Sneha a truth-teller or a liar? (a) truth-teller (b) liar
  13. 13.Each person always tells the truth or always lies. Neel says: “Karan is a liar.” Karan says: “Neel and I both tell the truth.” Is Neel a truth-teller or a liar? (a) truth-teller (b) liar
  14. 14.Each person always tells the truth or always lies. Aditya says: “At least one of us two, Ananya or I, is a liar.” Ananya says: “Aarav and I are different kinds.” Aarav says: “Aditya is a liar.” Is Aarav a truth-teller or a liar? (a) truth-teller (b) liar
  15. 15.Each person always tells the truth or always lies. Isha says: “Kavya tells the truth.” Kavya says: “At least one of us two, Aarav or I, is a liar.” Aarav says: “Kavya and I both tell the truth.” Is Kavya a truth-teller or a liar? (a) truth-teller (b) liar
  16. 16.Each person always tells the truth or always lies. Pooja says: “Diya tells the truth.” Diya says: “Pooja and I are different kinds.” Yash says: “Diya is a liar.” Is Yash a truth-teller or a liar? (a) truth-teller (b) liar
  17. 17.Each person always tells the truth or always lies. Farhan says: “Isha and I are the same kind.” Isha says: “Myra and I are the same kind.” Myra says: “Farhan and I are different kinds.” Is Myra a truth-teller or a liar? (a) truth-teller (b) liar
  18. 18.Each person always tells the truth or always lies. Karan says: “Riya is a liar.” Riya says: “At least one of us two, Karan or I, is a liar.” Is Riya a truth-teller or a liar? (a) truth-teller (b) liar
  19. 19.Each person always tells the truth or always lies. Saanvi says: “Neel and I are the same kind.” Neel says: “Saanvi is a liar.” Is Saanvi a truth-teller or a liar? (a) truth-teller (b) liar
  20. 20.Each person always tells the truth or always lies. Riya says: “Ira is a liar.” Neel says: “Ira and I both tell the truth.” Ira says: “Riya and I both tell the truth.” Is Riya a truth-teller or a liar? (a) truth-teller (b) liar
  21. 21.Each person always tells the truth or always lies. Myra says: “Yash is a liar.” Yash says: “Priya and I are the same kind.” Priya says: “Myra and I are different kinds.” Is Yash a truth-teller or a liar? (a) truth-teller (b) liar
  22. 22.Each person always tells the truth or always lies. Tara says: “Rohan and I are the same kind.” Rohan says: “Tara is a liar.” Is Tara a truth-teller or a liar? (a) truth-teller (b) liar
  23. 23.Each person always tells the truth or always lies. Yash says: “Aditya and I are the same kind.” Aditya says: “At least one of us two, Yash or I, is a liar.” Diya says: “Yash is a liar.” Is Yash a truth-teller or a liar? (a) truth-teller (b) liar
  24. 24.Each person always tells the truth or always lies. Karan says: “Saanvi and I both tell the truth.” Ishaan says: “Karan tells the truth.” Saanvi says: “Karan 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. Manav says: “At least one of us two, Dev or I, is a liar.” Dev says: “Manav and I are the same kind.” Is Dev a truth-teller or a liar? (a) truth-teller (b) liar
  26. 26.Each person always tells the truth or always lies. Zoya says: “Arjun and I are the same kind.” Arjun says: “Zoya is a liar.” Is Arjun a truth-teller or a liar? (a) truth-teller (b) liar
  27. 27.Each person always tells the truth or always lies. Pooja says: “Manav and I are different kinds.” Manav says: “Pooja tells the truth.” Is Pooja a truth-teller or a liar? (a) truth-teller (b) liar
  28. 28.Each person always tells the truth or always lies. Arjun says: “Farhan and I both tell the truth.” Farhan says: “Arjun tells the truth.” Ishaan says: “At least one of us two, Farhan or I, is a liar.” Is Ishaan a truth-teller or a liar? (a) truth-teller (b) liar
  29. 29.Each person always tells the truth or always lies. Aditya says: “Kavya is a liar.” Kavya says: “Siddharth and I are different kinds.” Siddharth says: “Kavya and I are the same kind.” Is Siddharth a truth-teller or a liar? (a) truth-teller (b) liar
  30. 30.Each person always tells the truth or always lies. Riya says: “Nisha and I are the same kind.” Aarav says: “At least one of us two, Riya or I, is a liar.” Nisha says: “Riya and I are different kinds.” Is Riya a truth-teller or a liar? (a) truth-teller (b) liar
  31. 31.Each person always tells the truth or always lies. Priya says: “Karan and I are the same kind.” Karan says: “At least one of us two, Priya or I, is a liar.” Is Priya a truth-teller or a liar? (a) truth-teller (b) liar
  32. 32.Each person always tells the truth or always lies. Aisha says: “Aarav and I are the same kind.” Aarav says: “Aisha tells the truth.” Is Aisha a truth-teller or a liar? (a) truth-teller (b) liar
  33. 33.Each person always tells the truth or always lies. Siddharth says: “Aisha and I are different kinds.” Aisha says: “Neel tells the truth.” Neel says: “Siddharth is a liar.” Is Aisha a truth-teller or a liar? (a) truth-teller (b) liar
  34. 34.Each person always tells the truth or always lies. Aarav says: “At least one of us two, Priya or I, is a liar.” Priya says: “Aarav and I both tell the truth.” Is Priya a truth-teller or a liar? (a) truth-teller (b) liar
  35. 35.Each person always tells the truth or always lies. Dev says: “At least one of us two, Kabir or I, is a liar.” Kabir says: “Dev is a liar.” Is Dev a truth-teller or a liar? (a) truth-teller (b) liar
  36. 36.Each person always tells the truth or always lies. Yash says: “At least one of us two, Farhan or I, is a liar.” Farhan says: “Kavya is a liar.” Kavya says: “Yash and I both tell the truth.” Is Farhan a truth-teller or a liar? (a) truth-teller (b) liar
  37. 37.Each person always tells the truth or always lies. Aisha says: “Vivaan and I both tell the truth.” Vivaan says: “Aisha is a liar.” Is Vivaan a truth-teller or a liar? (a) truth-teller (b) liar
  38. 38.Each person always tells the truth or always lies. Pooja says: “Dev and I both tell the truth.” Dev says: “Pooja is a liar.” Is Dev a truth-teller or a liar? (a) truth-teller (b) liar
  39. 39.Each person always tells the truth or always lies. Aarav says: “Ishaan and I are the same kind.” Ishaan says: “At least one of us two, Aarav or I, is a liar.” Is Ishaan a truth-teller or a liar? (a) truth-teller (b) liar
  40. 40.Each person always tells the truth or always lies. Nisha says: “Kabir and I are the same kind.” Kabir says: “Nisha and I are the same kind.” Is Kabir a truth-teller or a liar? (a) truth-teller (b) liar

Answer key

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

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