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4,310 interview questions, answered.

Reference answers, what the interviewer is really testing, how it is graded, and the follow-ups that come next.

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52 questions

  1. 1How many bottles of wine are opened per day?MediumProduct· Google
  2. 2How many grains of rice are in a 10kg bag?MediumProduct· Google
  3. 3Pick an airport and estimate the number of people going through the security scan every day.MediumProductSystem design· Google
  4. 4Estimate the number of tires purchased annually by a large car dealership in San Jose, California.MediumProduct· Google
  5. 5Estimate the bandwidth (bits/s) of a 747 crossing the Atlantic filled with CDROMs.MediumProduct· Google
  6. 6Estimate the number of cinema tickets sold in the US in one year.MediumProduct· Google
  7. 7Estimate the number of Gmail users in the US.MediumProduct· Google
  8. 8Estimate Google Ads revenue.MediumProduct· Google
  9. 9Estimate the number of Google Drive users.MediumProduct· Google
  10. 10Estimate the number of high school students in the US.MediumProduct· Google
  11. 11Estimate the total internet bandwidth required for a campus of 1000 graduate students.MediumProduct· Google
  12. 12Estimate the number of millennial homeowners in the US.MediumProduct· Google
  13. 13Estimate the number of motels in the US.MediumProduct· Google
  14. 14Estimate the total dollar amount of online sales for fruits and vegetables per year in NYC.MediumProduct· Google
  15. 15Estimate the number of people who frequently go out to bars.MediumProduct· Google
  16. 16Estimate the productivity loss during the holiday season at a medium-sized company.MediumProduct· Google
  17. 17How many scooters would be needed for a company with 2000 employees across 4 floors, assuming 500 employees per floor?MediumProduct· Google
  18. 18Estimate the total addressable market for Slack.MediumProduct· Google, Slack
  19. 19Estimate the amount of storage needed for Google Photos.MediumProductSystem design· Google
  20. 20If all people used self-driving cars for transportation, how many vehicles would be needed to service the U.S.?MediumProduct· Google
  21. 21Estimate the weight of a school bus.MediumProduct· Google
  22. 22Estimate the number of videos watched on YouTube per day.MediumProduct· Google, Youtube
  23. 23Estimate the size of the food delivery business using bikes.MediumProduct· Google
  24. 24How much does Meta (Facebook) spend to acquire one new user?MediumProduct· Google