Prove: Horses Have an Infinite Number of Legs.

  1. Horses have an even number of legs.
  2. They have two legs in back and fore legs in front.
  3. This makes a total of six legs, which certainly is an odd number of legs for a horse.
  4. But the only number that is both odd and even is infinity.
  5. Therefore, horses must have an infinite number of legs.