Brain teaser questions are the dumbest thing one can ask in a software engineering position interview. One time I interviewed for Deutsche Bank. There were two interviewers and one guy joined half way through the interview and was completely focusing on something else.
At the end of the interview other interviewer asked from the distracted guy if he has any questions and he came up with the stupidest brain teaser question ever, I don't even remember what it was, but after I answered it, he changed it again and then I asked the answer from him, and was very arrogantly said "I'm sure you know the answer" and I immediately said back, "But I guess you really don't know the answer to your own question right?". He was dumbfounded. I think he didn't expect me, the candidate to call him out.
Afterwards, I immediately sent and email to the recruiter about how bad the interview was and one interviewer was being more than 30 mins late and withdrew from the process and added Deutsche bank to my black list.
At the end of the interview other interviewer asked from the distracted guy if he has any questions and he came up with the stupidest brain teaser question ever, I don't even remember what it was, but after I answered it, he changed it again and then I asked the answer from him, and was very arrogantly said "I'm sure you know the answer" and I immediately said back, "But I guess you really don't know the answer to your own question right?". He was dumbfounded. I think he didn't expect me, the candidate to call him out.
Afterwards, I immediately sent and email to the recruiter about how bad the interview was and one interviewer was being more than 30 mins late and withdrew from the process and added Deutsche bank to my black list.