Ballpark #9 — answers
August 3, 2026 · five estimation questions and their accepted values
Question 1
How many keys does a full-size computer keyboard have?
104
Question 2
How tall is Mount Kilimanjaro, in meters?
5895
Question 3
How many chambers does the human heart have?
4
Question 4
What is the men’s marathon world record, in minutes?
121
Kelvin Kiptum ran 2:00:35 in 2023.
Question 5
How much does the International Space Station weigh, in tonnes?
420
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