## [Fermi Problem] How many liters of water are in the World?

Ever tried solving a Fermi Problem? I attempted to estimate Earthâ€™s water volume and found that with some basic facts and math, I got quite close to the real answer!

Learning never ends

Explore Fermi Problems, named after physicist Enrico Fermi. These estimation challenges emphasize the method of approximation and critical thinking over exact answers.