Propositional Logic: Logical Arguments and Syllogisms

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Multiple Choice

Which of the following is a valid syllogism?

  1. All men are mortal. Socrates is a man. Therefore, Socrates is mortal.
  2. All dogs are mammals. Cats are not dogs. Therefore, cats are not mammals.
  3. All birds have wings. Penguins are birds. Therefore, penguins can fly.
  4. All fruits are sweet. Apples are fruits. Therefore, apples are sweet.
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