Ballpark #15 — answers
August 9, 2026 · five estimation questions and their accepted values
Question 1
How many breaths does a person take in a day?
20000
At a typical resting rate.
Question 2
How long is the Trans-Siberian Railway, in kilometers?
9289
Question 3
How many episodes of The Simpsons have aired?
800
As of 2026, approximately.
Question 4
What is the diameter of the Moon, in kilometers?
3474
Question 5
How many passengers does a typical Boeing 737-800 seat?
162
Two-class layout; configs range roughly 160 to 190.
▶ Play today's Ballpark
Five new "how many?" questions every day. No signup.