1QUESTION 1 OF 3
Answer & explanation
The official answer, with Fermi’s reasoning step by step.
Answer & explanation
Official answer
1,263
robberies
How to estimate it
Fermi’s official “Napkin math”
There's a bank on nearly every main street, so call it 100,000 branches across the US. How often does one branch get robbed? Hardly ever. Maybe once a century.
- US bank branches
- ≈ 100,000
- Robbed once every
- ÷ 100 years
- 100,000 ÷ 100
- ≈ 1,000
Rounded assumptions may give a slightly different estimate. The official answer above is the game’s reference value.
Source calculation & reference
- Commercial banks
- 1,112
- Credit unions
- 126
- Other institutions
- + 25
- ≈
- 1,263
Reference cited by Fermi: FBI Bank Crime Statistics annual report
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.