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Truth Teller and Liar Puzzles Worksheet

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

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