Valid or Invalid? - The Syllogisms

Syllogism 1 of 15

Remember, we're interested only in whether the argument is valid; that is, whether the conclusion follows as a matter of necessity given the truth of the premises. Just select "Valid" or "Invalid" from the drop-down list below, then press Next.

Please select... Valid Invalid

Really Deep Thought

What could be more clear or obvious when we look up to the sky and contemplate the heavens, than that there is some divinity of superior intelligence? (Lucilius)
   --Cicero.