Riddles and Answers
The answer to the riddle – #68 Three Agents
Note that it’s the agent with the Green badge and not Agent Green talking to Agent Red.
As the agent with the green badge has spoken to Agent Red, we know that Agent Red doesn’t have a green badge. We already know he doesn’t have a red badge. Therefore he has a yellow badge.
The agent with the green badge cannot be Agent Red, nor can he be Agent Green, therefore he is Agent Yellow.
So Agent Yellow has a Green badge, and Agent Red has a yellow badge, meaning Agent Green must have a red badge.