This question is a classic Fermi problem, designed to assess your problem-solving and estimation skills rather than a specific data point. The goal is to demonstrate a logical approach to breaking down a complex question with limited information. A strong answer would involve:
- Clarifying Questions: Asking about the scope (e.g., global vs. specific regions, active users vs. total users).
- Assumptions & Data Points: Estimating key figures like the number of active Uber users worldwide, the average number of rides per user per month, and the percentage of users who use Uber regularly.
- Calculation: Multiplying these estimates together to arrive at a monthly ride estimate. For example: (Global Population) * (% using smartphones) * (% using ride-sharing apps) * (% using Uber) * (Avg. rides per user/month) = Total Monthly Rides.
- Sanity Check: Reviewing the final number to ensure it's within a reasonable range and adjusting assumptions if necessary.
The process and reasoning are more important than the final number itself.
Uber