The first interview was quite short and straightforward. The interviewer asked me to introduce myself before jumping into the case. There was not behavioural questions at all. The interviewer read out the case question (details about a disease and the drug that is to be launched). She first asked me to size the market for the drug (remember to clarify the specific geography). After I presented my structure she asked me to calculate it. I thought I had to make my own assumptions and estimations but she had all the numbers I need, just needed to ask for them.