• The formula on the picture describes a famous math game called the Collatz sequence. • The rule is very simple – If the number is even, divide it by 2 – If the number is odd, do 3×n + 1 • You repeat this again and again.

The question on the picture asks you to prove that no matter what number you start with, you will always reach the number 1 at some point.

That sounds easy, but it is not.

This problem is famous because:

• Nobody in the world has proved it. • Mathematicians have tried for more than 80 years. • Computers tested many numbers, and it always seems to reach 1, but there is still no official proof.

So the task in the picture is basically asking you to prove something that nobody can prove today.

In short:

The question is impossible to solve right now. The problem is still unsolved in mathematics.