This is a simple logic puzzle from one of Ian Stewart’s many math collections.

1. Elephants always wear pink trousers.
2. Every creature that eats honey can play the bagpipes.
3. Anything that is easy to swallow eats honey.
4. No creature that wears pink trousers can play the bagpipes.

Therefore:

Elephants are easy to swallow.

Is the deduction correct, or not?

Answer.

See Swallowing Elephants for a solution.