# Demo entry 6318308

**Hi**

Submitted by **anonymous**
on Nov 07, 2016 at 00:16

Language: Ruby. Code size: 347 Bytes.

# Project Euler Problem: 1 # Multiples of 3 and 5 =begin 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 the multiples of 3 or 5 below 1000. =end sum = 0 1000.times do |n| if n % 3 == 0 or n % 5 == 0 sum += n end end puts sum

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