Anker is the former c eo of groupon india. He said his favorite question is explain something that you know really well, assuming i know thing about it. Unker's question tells me what it looks like for a candidate to be passionate about something. It tells me if the candidate is actually curious and if they know what it means to go deep down the rabbit hole. Andrew: What did you do to prepare for this interview? I love this question because it is the most tangible way to understand how motivated some one is to work for you.