One interviewer summarized her last project with the client. She asked many why questions in order to understand you haven't just memorized common frameworks. There was a cheese company in Holland who was looking to increase its revenue. One questions was which options should you consider to increase the revenue? You are expected to give at least 3-4 answers. In my case, she was looking for you to say "expanding other countries". Then she asked which criteria should be used before entering into new market. After a couple of more questions, she showed me a chart and wanted me calculate production cost.