I answered one of those mind benders nearly immediately in an interview. I figured out the trick as they were telling it basically. They asked me if I had heard it before. I hadn't. A final interview with the CEO and he asked if I had heard it before and I said I hadn't. I later realized based on how they were asking if I had heard it before, they thought I was lying.
The question: You get on a ski lift going up. It's 1000m long and you move at 20m/s. Between when you get on at the bottom and you get off at the top, how many of the chairs going down do you pass?
The question: You get on a ski lift going up. It's 1000m long and you move at 20m/s. Between when you get on at the bottom and you get off at the top, how many of the chairs going down do you pass?