Aptitude and skills assessment: This is often the first round, especially for campus recruits, and may involve an online or written test. Content: Questions on aptitude, reasoning, and the basics of programming languages like Python. Purpose: To shortlist candidates with the required foundational knowledge. Case study and guesstimate rounds: This stage tests your analytical and problem-solving abilities. Case study: You will be given a business problem and asked to propose a data-driven solution, often in a written format. Guesstimate: You will be asked to make logical assumptions and calculate an approximate value for a real-world scenario, like "Estimate the number of Mother Dairy packets sold in Delhi".