they let you prep for cases and do what the book says. this is only a question of how hard you prepared. then they take the people one by one and repeat again and again. sometimes the people who give you interviews have been there for less time than 1 yr

The selection process is rigorous and highly competitive, involving multiple rounds of case interviews along with a personality assessment. Candidates are evaluated not only on their problem-solving and analytical abilities but also on their communication, leadership potential, and overall fit with the organization’s values and culture. The process is designed to identify high achievers who have demonstrated consistent excellence throughout their academic and professional journeys, maintaining strong performance over time rather than relying on isolated accomplishments.”