Happy New Year everyone! You probably know what a factorial is. $$n!=n \left(n-1\right)\left(n-2\right)\left(n-3\right)\times3\times2\times1$$ Or, if you like calculus: $$x!=\int_{0}^{\infty} t^x{e^{-t}} dt$$ Like, for example, 8!…

Hi everyone! Today I am going to talk about the Fibonacci sequence and where it appears in nature.

Here, I look at the most interesting formula in the world: Pythagoras’ Theorem!