Ballpark #13 — answers
August 7, 2026 · five estimation questions and their accepted values
Question 1
How many steps do racers climb in the Empire State Building Run-Up?
1576
Question 2
What is the wingspan of an Airbus A380, in meters?
80
Question 3
How many hairs are on an average human head?
100000
Question 4
How old is the universe, in billions of years?
13.8
Question 5
How many countries use the euro as their official currency?
21
Bulgaria became the 21st in January 2026.
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