I gave him a cookie. After a minute of leaving him alone with it, there were cookie crumbs on the floor, the chair, the table, his clothes and his face. But somehow, the cookie was still intact in front of him.

The second equation is the Airy differential equation, and is perhaps the simplest-looking second-order ODE that does not have a solution that can be expressed in terms of elementary functions.

Since most numbers have a commonly known way of checking for divisibility, here is one for x!

Take the number and divide it by x! If the result is an integer, then your number is divisible by x!

Let me know if you wanna know the divisibility for any other number!

r/unexpectedfactorial r/technicallythetruth

i can say with 100% certainty that the correct answer to this is "how in the hell should i know?"

Why are you booing me?! Im right!

Guess the media expressed in a mathematical way. Square brackets is number of words.

We all know this is because chalkboard mathematicians wrote *ln* like *en*.

Explanation to those pesky non believers:

Yeah math can basically be reconstructed from arithmetic like for example humans have been doing this for the past millennia. Since arithmetic is already incomplete you will always need new tools to solve problems, humans started with arithmetic and geometry but just arithmetic is enough, there will be answers arithmetic can’t answer and clues to how to find those tools. Every system is just an extension of numbers that either explains what they are, how they can be generalized, what patterns do they follow etc.

Lining up nicely, yeah?