Ask HN: What's your speciality, and what's your "FizzBuzz" equivalent? 13 years ago
I was once given a boolean function, asked to implement it using logic gates. And then asked to optimize it based on a few criteria (for example: GNDs and VDDs cost a lot, reduce the gates, etc.)
The most annoying thing was, I was not expecting any gates related question so my optimizations were very... adhoc.