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Predicate Logic and Economics

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Multiple Choice

Which of the following is a valid logical argument?

  1. If all men are mortal, and Socrates is a man, then Socrates is mortal.
  2. If all men are mortal, and Socrates is a philosopher, then Socrates is mortal.
  3. If all men are mortal, and Socrates is a dog, then Socrates is mortal.
  4. If all men are mortal, and Socrates is a cat, then Socrates is mortal.
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