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Truth Teller and Liar Puzzles Worksheet

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

Answer key

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

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