Ballpark — June 27, 2026
Answers to that day's 5 daily estimation questions.
GDP of Bangladesh
460 USD (billions)
One of the fastest-growing economies in South Asia.
Number of teeth in a standard adult mouth
32 teeth
This includes the four wisdom teeth.
Average hours a lightbulb lasted in the 1920s
~2,500 hours
The Phoebus Cartel later limited lifespans to 1,000 hours.
Weight of a typical bowling ball
12 lbs
Most adults use between 10 and 16 lbs.
Cells in the human body
37 trillion
Recent estimates suggest roughly 37 trillion human cells.