AI MCQ #13: How do you represent “All dogs have tails”?

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Q13. How do you represent “All dogs have tails”?

  • a) ۷x: dog(x) àhastail(x)
  • b) ۷x: dog(x) àhastail(y)
  • c) ۷x: dog(y) àhastail(x)
  • d) ۷x: dog(x) àhasàtail(x)

✅ Correct Answer: A) ۷x: dog(x) àhastail(x)

Explanation: We represent the statement in mathematical logic taking ‘x ‘as Dog and which has tail. We cannot represent two variable x, y for the same object Dog that has tail. The symbol “۷ “represent all.