This question exemplifies a classic Fermi Problem, typically posed to evaluate your problem-solving abilities, capacity for making reasonable assumptions, logical reasoning, and approximation skills. The interviewer does not expect you to provide the precise number of Zomato food delivery drivers in Bangalore, India; instead, they are interested in how systematically and logically you can tackle this intricate issue. To effectively address this kind of question, you should: Formulate reasonable assumptions based on your knowledge and common sense. Divide the problem into smaller, more manageable parts. Utilize your numerical estimation abilities. For this scenario, you might consider estimating: The population of Bangalore. The proportion of individuals likely to use food delivery services. The number of food delivery service companies and their respective market shares. The average number of deliveries a Zomato driver can make in a day, among other factors.