Ballpark — September 29, 2026
Answers to that day's 5 daily estimation questions.
Planets in our solar system that have rings
4 planets
Jupiter, Saturn, Uranus, and Neptune all have rings.
Elements in the Periodic Table
118 elements
The last four were officially added in 2016.
Bones in an adult human body
206 bones
Many bones fuse together as we grow.
Teeth in a Great White Shark
300 teeth
They lose and replace thousands in a lifetime.
Minutes to hard-boil an egg at sea level
10 minutes
9-12 minutes is the sweet spot.