I had an interview question once which went...
Interviewer: "Could you tell me how many people will eat curry for their dinner this evening" Me: "Er, sorry?" Interviewer: "Not the actual number just an estimate"
I actually started to stumble my way through it, when I stopped and questioned what it had to do with anything about the job. The interviewer mumbled something and moved on.
I guess the question is, what is the point in the ridiculous questions? I just don't understand why they started coming up with these things.