Proof techniques: Proof by Oddity
SAMPLE: To prove that horses have an infinite number of legs.- Horses have an even number of legs.
- They have two legs in back and fore legs in front.
- This makes a total of six legs, which certainly is an odd number of legs for a horse.
- But the only number that is both odd and even is infinity.
- Therefore, horses must have an infinite number of legs.
fortune