Guesstimate Interview Questions with Answers
Market sizing and estimation questions asked in PM, consulting and analyst interviews, each with a structure, step-by-step maths and a final estimate.
- Estimate the number of tube lights in a city like Bangalore (Easy)
- Estimate how many McDonald’s burgers are sold per month in India (Easy)
- Estimate how many pizzas are sold daily in New York City (Easy)
- Estimate number of daily Uber ride requests in a metro city (Easy)
- Estimate daily water consumption for a city of 5M people (Easy)
- Estimate how many coffee shops are needed for a city of 10M people (Easy)
- Estimate number of taxi rides taken globally per day (Easy)
- Estimate daily email sends worldwide on Gmail (Easy)
- Estimate the number of photos uploaded daily to Instagram (Easy)
- Estimate number of plastic bottles used daily in a metro city (Easy)
- Estimate number of petrol pumps in India (Easy)
- Estimate daily credit card transactions in India (Easy)
- Estimate number of bicycles sold annually in a country (Easy)
- Estimate number of rooms cleaned daily in hotels in a city (Easy)
- Estimate monthly mobile data consumption in a country (Easy)
- How many tennis balls fit inside a Boeing 747? (Medium)
- Estimate the number of cars sold in India in 2023 (Medium)
- Estimate total annual streaming hours on Netflix in India (Medium)
- Estimate annual e-commerce shipments globally (Medium)
- Estimate daily Google search volume in a country (Medium)
- Estimate annual food delivery orders in New York City (Medium)
- Estimate total number of hotel bookings worldwide per month (Medium)
- Estimate daily messages sent via SMS + messaging apps (Medium)
- Estimate the size of digital advertising spending by SMBs in India (Medium)
- Estimate total number of cloud storage TB consumed globally annually (Medium)
- Estimate first-year sales volume for Apple Vision Pro in India (Hard)
- Estimate annual global market size for wearables (fitness trackers) (Hard)
- Estimate global OTT revenue opportunity if Netflix enters 5 new countries (Hard)
- Estimate SaaS subscription revenue for a productivity tool targeting SMBs globally (Hard)
- Estimate annual e-commerce GMV impact of 10% increase in delivery fees (Hard)
- Estimate annual demand for bike-sharing fleet size in Bangalore (Hard)
- Estimate global number of active Uber drivers (Hard)
- Estimate global demand for airline seats in the year 2030 (Hard)
- Estimate the number of Amazon Prime orders placed daily worldwide (Hard)
- Estimate annual shipping container movement globally in TEUs (Hard)