Ballpark #47 — answers
September 10, 2026 · five estimation questions and their accepted values
Question 1
How many strings does a violin have?
4
Question 2
How fast does a commercial jet cruise, in km/h?
900
Question 3
How many people have walked on the Moon?
12
Question 4
How much does the Statue of Liberty weigh, in tonnes?
225
Copper skin plus the steel frame.
Question 5
How many years is a human generation, on average?
25
▶ Play today's Ballpark
Five new "how many?" questions every day. No signup.