Ballpark #45 — answers
September 8, 2026 · five estimation questions and their accepted values
Question 1
How many spikes are on the Statue of Liberty’s crown?
7
One for each continent and each sea, by the usual telling.
Question 2
How much does a cubic meter of water weigh, in kilograms?
1000
Question 3
How many operas did Mozart write?
22
Question 4
How far does a Formula 1 Grand Prix run, in kilometers?
305
The regulation minimum race distance.
Question 5
How many bird species are there in the world?
11000
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