Table of Contents
- Overview: Problem 172
- Final Answer
Overview: Problem 172
How many 18-digit numbers \(n\) (without leading zeros) are there such that no digit occurs more than three times in \(n\)?
Project Euler Problem 172 is your classic Project Euler problem: short, simple, and overwhelmingly complicated.
To nail this one, it's important to start simple - very simple. What I'll do is walk through the process of …