50%

Project Euler problems that are rated at 50% difficulty.

2024

• #230 - Fibonacci Words 12 Oct

2019

• #139 - Pythagorean tiles 23 Jun
• #137 - Fibonacci golden nuggets 21 Jun

2017

• #144 - Investigating multiple reflections of a laser beam 17 Aug
• #151 - Paper sheets of standard sizes: an expected-value problem 01 Aug