Question

What's 3n+1? my teacher asked everyone in his class (including me) and he said it's almost impossible (then he started laughing when we came up with an answer)

why is this?

Answer 1

It is a Collatz Conjecture Problem

Explanation:

By definition The Collatz conjecture is a conjecture in mathematics that concerns sequences defined as follows: start with any positive integer n.

It really just requires evenness within the problem.

n (in many cases) is considered infinite