Question

The unit of a 6 digit number is 1. The unit digit 1 then replaces to the far left of the remaining 5 digits. If the new number is 1/3 of the original number. What is the original number?]

Answer 1

428571.

Explanation:

I couldn't think of a way to do it mathematically so I did it by writing a python program.

428571 / 142857 = 3.