All Fermi answers
Fermi #72 · Question 1

How long would it take to listen to every country's national anthem back to back?

Explore the official answer and the simple reasoning behind this Fermi estimate.

1QUESTION 1 OF 3

Answer & explanation

The official answer, with Fermi’s reasoning step by step.

Answer & explanation

Official answer

266

minutes

How to estimate it

Fermi’s official “Napkin math”

Start with the number of countries, about 200, and each one has an anthem. How long is an anthem? Picture an Olympic medal ceremony, with the winner on the podium while their anthem plays. That feels like about a minute and a half, so call that the average.

Countries
~200
Minutes per anthem
× 1.5
200 × 1.5
≈ 300 minutes

Rounded assumptions may give a slightly different estimate. The official answer above is the game’s reference value.

Source calculation & reference
Anthems of every nation at the 2008 Beijing Olympics
205
Total running time (Alex Marshall, Mail & Guardian)
4 h 26 min 25 s
4 × 60 + 26
≈ 266 minutes

Reference cited by Fermi: Alex Marshall, Mail & Guardian (19 August 2008): all 205 national anthems of the Beijing Olympics nations add up to 4 hours, 26 minutes and 25 seconds

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