3QUESTION 3 OF 3
Answer & explanation
The official answer, with Fermi’s reasoning step by step.
Answer & explanation
Official answer
5,100,000
horses
How to estimate it
Fermi’s official “Napkin math”
The easiest place to start is Mongolia's population. It's a huge, empty country, maybe 3 million people. How many horses per person? More than one, so call it one and a half.
- Mongolia's population
- ~3,000,000
- Horses per person
- × 1.5
- 3M × 1.5
- ≈ 4,500,000
Rounded assumptions may give a slightly different estimate. The official answer above is the game’s reference value.
Source calculation & reference
- All livestock counted in Mongolia, end of 2025 (NSO, preliminary)
- ≈ 58.1 million
- Horses among them
- ≈ 5,100,000
Reference cited by Fermi: National Statistics Office of Mongolia, 2025 livestock census (preliminary results, January 2026): 58.1 million head of livestock, 5.1 million of them horses
How close was your guess?
Your comparison will appear here.
Compare by ratio: divide the larger number by the smaller one. The closer to 1×, the better.