3QUESTION 3 OF 3
Answer & explanation
The official answer, with Fermi’s reasoning step by step.
Answer & explanation
Official answer
135,000
slot machines
How to estimate it
Fermi’s official “Napkin math”
Vegas is wall to wall casinos. How many are there? Big ones on the Strip plus all the smaller spots, call it 120. Each one runs around 1,000 slot machines.
- Casinos in Vegas
- ~120
- Slots per casino
- ~1,000
- 120 × 1,000
- ≈ 120,000
Rounded assumptions may give a slightly different estimate. The official answer above is the game’s reference value.
Source calculation & reference
- Clark County licensed gaming devices
- ≈ 135,000
- Includes casinos, bars, gas stations, airport
- —
- Las Vegas Strip share
- ~40% of total
Reference cited by Fermi: Nevada Gaming Control Board
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.