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Truth Teller and Liar Puzzles Worksheet

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

Answer key

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

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