Problem 1 - Multiples of 3 or 5
1 min
If we list all the natural numbers below \(10\) that are multiples of \(3\) or \(5\), we get \(3, 5, 6\) and \(9\). The sum of these multiples is \(23\). Find the sum of all…
January 15, 2026
Answering all of Project Euler
… eventually.

Here you’ll find me working through answering all of the Project Euler problems using both R & Python (& Math of course)!
I’m treating R as a first class citizen, a feat that I think is a bit novel as the majority of members have answered using Python, C/C++, Java, & C#.
Code Languages used by Project Euler members.