Ballpark #25 — answers
August 19, 2026 · five estimation questions and their accepted values
Question 1
How long is the Kentucky Derby, in kilometers?
2
1.25 miles.
Question 2
How many characters are in the biggest Chinese dictionaries?
50000
Literate adults use about 3,000 to 4,000.
Question 3
How high is an Olympic diving platform, in meters?
10
Question 4
How much does a US nickel weigh, in grams?
5
Question 5
How many paintings did Van Gogh sell in his lifetime?
1
The commonly cited count.
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