- If we list all of 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 the multiples of 3 or 5 below 1000.
- Code your procedural solution into the
lib/multiples.rb
file. - Then when you have finished the procedural solution, code your object-oriented solution into the
lib/oo_multiples.rb
file. - Run
learn
until you get all of the RSpec tests to pass.
View Project Euler on Learn.co and start learning to code for free.