A serial killer sequesters his victims and makes them choose between two tablets, one harmless and the other deadly; then he takes the remaining tablet. Each time, the victim takes one of the two tablets, drinks a glass of water, and dies instantly, while the killer always ends up with the harmless tablet.
How is it that the killer never ends up with the deadly tablet?
- Show the answer
Answer for riddle
Both of the pills were harmless. The poison was in the glass of water the victim drank.