The first interview I attended as a fresh grad was with an MNC. The first round was the aptitude which I aced - came out at the top of the crowd. Next in the F2F, I was asked a simple question - How would you swap two variables? With and without using a third variable.

My mind went completely blank. These were the sort of questions you go prepared for. But don't know what happened to me that day, I faltered and literally begged him for another question, but he wasn't interested.

Well, I got a job in a better company later on, but still, such a simple question.......