2QUESTION 2 OF 3
Answer & explanation
The official answer, with Fermi’s reasoning step by step.
Answer & explanation
Official answer
4,900,000,000
eggs
How to estimate it
Fermi’s official “Napkin math”
Start with the world's population, about 8 billion. How many eggs does a person eat in a week? Some have two every morning, plenty have none, and eggs hide in cakes and noodles too. Call it 4 a week.
- World population
- 8,000,000,000
- Eggs per person per week
- ≈ 4
- 8B × 4 ÷ 7
- ≈ 4.6 billion
Rounded assumptions may give a slightly different estimate. The official answer above is the game’s reference value.
Source calculation & reference
- World hen eggs laid in 2024
- ≈ 1.78 trillion
- Days in 2024
- ÷ 366
- 1.78 trillion ÷ 366
- ≈ 4.9 billion
Reference cited by Fermi: UN Food and Agriculture Organization (FAOSTAT), hen eggs in shell, 2024
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