Ballpark — May 6, 2026
Answers to that day's 5 daily estimation questions.
Elements in the Periodic Table
118 elements
The last four were officially added in 2016.
Pairs of ribs in a human body
12 pairs
Most people have 12 pairs of ribs.
Planets in the solar system
8 planets
The count dropped to eight after 2006.
Wings a bee has
4 wings
The wings hook together during flight.
Species of penguin alive today (commonly cited)
~18 species
Counts vary slightly by taxonomy; 18 is commonly cited.