Question: You are trapped in an elevator with 10 people (5 men 5 women), there is a mind reader among you.
You will all run out of oxygen in the next hour.
The only way out of the elevator is to figure out which one of them is the mind-reader, how do you do it?
Answer: Put a cloth over your mouth so no one can see it then ask everybody any question twice once out loud and once in your mind the one who responds to both is the mind-reader