3QUESTION 3 OF 3
Answer & explanation
The official answer, with Fermi’s reasoning step by step.
Answer & explanation
Official answer
1,150,000
people
How to estimate it
Fermi’s official “Napkin math”
No single number to grab, so build it. Picture the flight-tracker map, maybe 10,000 planes in the air at once. Each one holds around 130 people.
- Planes airborne
- ~10,000
- People per plane
- × 130
- 10,000 × 130
- ≈ 1.3 million
Rounded assumptions may give a slightly different estimate. The official answer above is the game’s reference value.
Source calculation & reference
- Commercial flights airborne
- ≈ 9,500
- Average passengers per flight
- × 135
- 9,500 × 135
- ≈ 1.3 million
Reference cited by Fermi: Flightradar24 · IATA load factors
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