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Truth Teller and Liar Puzzles Worksheet

Logical reasoning lesson 24: Truth-tellers and liars · Set 115 · 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. Siddharth says: “Ananya and I are the same kind.” Ananya says: “Siddharth tells the truth.” Is Ananya a truth-teller or a liar? (a) truth-teller (b) liar
  2. 2.Each person always tells the truth or always lies. Siddharth says: “Aditya and I are different kinds.” Aditya says: “Siddharth and I are different kinds.” Is Siddharth a truth-teller or a liar? (a) truth-teller (b) liar
  3. 3.Each person always tells the truth or always lies. Riya says: “Ananya tells the truth.” Ananya says: “Siddharth and I are the same kind.” Siddharth says: “Riya and I are the same kind.” Is Siddharth a truth-teller or a liar? (a) truth-teller (b) liar
  4. 4.Each person always tells the truth or always lies. Arjun says: “Meera is a liar.” Meera says: “At least one of us two, Arjun or I, is a liar.” Is Arjun a truth-teller or a liar? (a) truth-teller (b) liar
  5. 5.Each person always tells the truth or always lies. Riya says: “Nisha and I are different kinds.” Nisha says: “Riya and I are different kinds.” Is Nisha a truth-teller or a liar? (a) truth-teller (b) liar
  6. 6.Each person always tells the truth or always lies. Siddharth says: “Ira tells the truth.” Arjun says: “Ira is a liar.” Ira says: “Arjun and I are different kinds.” Is Ira a truth-teller or a liar? (a) truth-teller (b) liar
  7. 7.Each person always tells the truth or always lies. Myra says: “Riya and I are the same kind.” Riya says: “Myra tells the truth.” Is Riya a truth-teller or a liar? (a) truth-teller (b) liar
  8. 8.Each person always tells the truth or always lies. Kabir says: “Kavya and I are the same kind.” Rohan says: “Kavya tells the truth.” Kavya says: “Kabir tells the truth.” Is Kabir a truth-teller or a liar? (a) truth-teller (b) liar
  9. 9.Each person always tells the truth or always lies. Farhan says: “Pooja and I both tell the truth.” Pooja says: “At least one of us two, Farhan or I, is a liar.” Is Pooja a truth-teller or a liar? (a) truth-teller (b) liar
  10. 10.Each person always tells the truth or always lies. Nisha says: “Farhan and I are different kinds.” Ishaan says: “Nisha is a liar.” Farhan says: “Ishaan tells the truth.” Is Ishaan a truth-teller or a liar? (a) truth-teller (b) liar
  11. 11.Each person always tells the truth or always lies. Nisha says: “Myra tells the truth.” Myra says: “Aditya and I are the same kind.” Aditya says: “Myra is a liar.” Is Myra a truth-teller or a liar? (a) truth-teller (b) liar
  12. 12.Each person always tells the truth or always lies. Rohan says: “Vivaan and I are the same kind.” Vivaan says: “Rohan tells the truth.” Is Rohan a truth-teller or a liar? (a) truth-teller (b) liar
  13. 13.Each person always tells the truth or always lies. Yash says: “Ira is a liar.” Ira says: “Yash and I are different kinds.” Is Ira a truth-teller or a liar? (a) truth-teller (b) liar
  14. 14.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: “Pooja and I both tell the truth.” Pooja says: “Aarav is a liar.” Is Pooja a truth-teller or a liar? (a) truth-teller (b) liar
  15. 15.Each person always tells the truth or always lies. Kabir says: “Pooja is a liar.” Pooja says: “Kabir and I are the same kind.” Is Kabir a truth-teller or a liar? (a) truth-teller (b) liar
  16. 16.Each person always tells the truth or always lies. Aisha says: “Kabir and I both tell the truth.” Kabir says: “At least one of us two, Aisha or I, is a liar.” Is Kabir a truth-teller or a liar? (a) truth-teller (b) liar
  17. 17.Each person always tells the truth or always lies. Vivaan says: “Siddharth tells the truth.” Siddharth says: “Vivaan and I are the same kind.” Arjun says: “Vivaan is a liar.” Is Arjun a truth-teller or a liar? (a) truth-teller (b) liar
  18. 18.Each person always tells the truth or always lies. Ishaan says: “Karan and I are the same kind.” Ananya says: “Ishaan tells the truth.” Karan says: “Ishaan is a liar.” Is Karan a truth-teller or a liar? (a) truth-teller (b) liar
  19. 19.Each person always tells the truth or always lies. Priya says: “Diya and I are the same kind.” Diya says: “Priya and I both tell the truth.” Is Diya a truth-teller or a liar? (a) truth-teller (b) liar
  20. 20.Each person always tells the truth or always lies. Aarav says: “Pooja and I are different kinds.” Pooja says: “Aarav and I are different kinds.” Tara says: “At least one of us two, Pooja or I, is a liar.” Is Pooja a truth-teller or a liar? (a) truth-teller (b) liar
  21. 21.Each person always tells the truth or always lies. Ishaan says: “At least one of us two, Aarav or I, is a liar.” Aarav says: “Ishaan and I are the same kind.” Is Ishaan a truth-teller or a liar? (a) truth-teller (b) liar
  22. 22.Each person always tells the truth or always lies. Neel says: “At least one of us two, Rohan or I, is a liar.” Rahul says: “Neel tells the truth.” Rohan says: “Neel is a liar.” Is Neel a truth-teller or a liar? (a) truth-teller (b) liar
  23. 23.Each person always tells the truth or always lies. Ishaan says: “Aarav is a liar.” Arjun says: “Aarav is a liar.” Aarav says: “Ishaan and I are the same kind.” Is Aarav a truth-teller or a liar? (a) truth-teller (b) liar
  24. 24.Each person always tells the truth or always lies. Siddharth says: “Ananya and I are the same kind.” Ananya says: “Siddharth is a liar.” Myra says: “Ananya tells the truth.” Is Myra a truth-teller or a liar? (a) truth-teller (b) liar
  25. 25.Each person always tells the truth or always lies. Vivaan says: “Rohan is a liar.” Rohan says: “Vivaan and I are the same kind.” Is Vivaan a truth-teller or a liar? (a) truth-teller (b) liar
  26. 26.Each person always tells the truth or always lies. Sneha says: “At least one of us two, Nisha or I, is a liar.” Nisha says: “Sneha and I are the same kind.” Is Sneha a truth-teller or a liar? (a) truth-teller (b) liar
  27. 27.Each person always tells the truth or always lies. Myra says: “Vivaan is a liar.” Vivaan says: “Myra and I are different kinds.” Diya says: “Myra is a liar.” Is Myra a truth-teller or a liar? (a) truth-teller (b) liar
  28. 28.Each person always tells the truth or always lies. Diya says: “Farhan and I are different kinds.” Farhan says: “Riya tells the truth.” Riya says: “Diya tells 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. Aarav says: “Sneha and I both tell the truth.” Sneha says: “Aarav is a liar.” Is Sneha a truth-teller or a liar? (a) truth-teller (b) liar
  30. 30.Each person always tells the truth or always lies. Yash says: “At least one of us two, Aditya or I, is a liar.” Aditya says: “Yash and I both tell the truth.” Is Yash a truth-teller or a liar? (a) truth-teller (b) liar
  31. 31.Each person always tells the truth or always lies. Meera says: “Ishaan and I are different kinds.” Ishaan says: “Meera and I are different kinds.” Is Ishaan a truth-teller or a liar? (a) truth-teller (b) liar
  32. 32.Each person always tells the truth or always lies. Omkar says: “Vivaan and I are different kinds.” Vivaan says: “Omkar and I are the same kind.” Ananya says: “Omkar tells the truth.” Is Ananya a truth-teller or a liar? (a) truth-teller (b) liar
  33. 33.Each person always tells the truth or always lies. Saanvi says: “Manav is a liar.” Manav says: “At least one of us two, Saanvi or I, is a liar.” Is Saanvi a truth-teller or a liar? (a) truth-teller (b) liar
  34. 34.Each person always tells the truth or always lies. Ishaan says: “Meera and I both tell the truth.” Meera says: “At least one of us two, Ishaan or I, is a liar.” Vivaan 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. Pooja says: “Arjun and I are the same kind.” Arjun says: “Pooja tells the truth.” Is Arjun a truth-teller or a liar? (a) truth-teller (b) liar
  36. 36.Each person always tells the truth or always lies. Riya says: “Pooja and I both tell the truth.” Pooja 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
  37. 37.Each person always tells the truth or always lies. Aisha says: “At least one of us two, Vivaan or I, is a liar.” Vivaan says: “Aisha and I are the same kind.” Is Aisha a truth-teller or a liar? (a) truth-teller (b) liar
  38. 38.Each person always tells the truth or always lies. Kabir says: “Karan and I both tell the truth.” Karan says: “Kabir and I are the same kind.” Is Karan a truth-teller or a liar? (a) truth-teller (b) liar
  39. 39.Each person always tells the truth or always lies. Zoya says: “Yash and I are different kinds.” Arjun says: “Yash tells the truth.” Yash says: “Zoya is a liar.” Is Arjun a truth-teller or a liar? (a) truth-teller (b) liar
  40. 40.Each person always tells the truth or always lies. Zoya says: “Siddharth and I are different kinds.” Siddharth says: “Zoya is a liar.” Is Zoya a truth-teller or a liar? (a) truth-teller (b) liar

Answer key

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

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