Fermi Questions.

All calculations on this page have been done by me unless stated otherwise. Naturally, they will differ from your own answers, should you attempt one of these questions yourself. You should not see a solution given here as a definitive answer, but rather just one example of many ways to go about solving it. If you see a question and believe you have found another way to solve it, please send a submission on the home page (under “Contact Us”) with the question you are answering! I may add it to the page as another example solution.

A view of a beach with turquoise water and a large limestone rock formation, seen through a natural rock archway with a cloudy sky and distant mountains.
How much would sea levels rise if everyone peed in the ocean?
A slice of layered lasagna on a white plate, topped with cheese, basil, and tomato sauce.
How many lasagnas could you make if the Mariana Trench was filled with marinara?
How many lasagnas could you make if the Mariana Trench was filled with marinara?
A clear glass of water with bubbles, placed on a windowsill or flat surface, with a distant building visible through the window in the background.
What is the probability that a glass of water contains a water molecule that you've already drunk before?
Astronaut standing on the moon near an American flag with footprints on the lunar surface and a dark sky in the background.
How many pizzas could you make if the moon was made of cheese?
A close-up view of small white rubber stamps with black text, showing various words such as 'wet,' 'sleep,' 'more,' 'bug,' and 'explore,' scattered and overlapping.
How many words have you written in your entire life?
Six pigeons are perched on a green pipe, with one pigeon in mid-flight descending towards the others, set against a plain white background.
How many pigeons would it take to lift the Empire State Building?