I'm so glad I've managed my career such that I've never had to answer bullshit interview questions like this. The only purpose of these is to stroke the asker's ego, they tell you nothing at all about the candidate. What a waste of time.
Same. I don't know if I have been lucky. I have worked with 6 companies in the past (startups, multinationals, consultancy companies, etc.) and I have never had to answer brain teasers.