The Case of the Samurai Collection
Pro. Lodger walked over to the new samurai sword collection at the museum. A special collection was in the back of the exhibit. The swords of an unnamed samurai master were on display. In a glass case, 3 swords lay. Lodger immediately phoned the museum director. “This collection isn’t complete, unlike what the signs say!”
Answer: Samurai carried 2 swords. Had the collection been complete, there would have been an even number of swords.