// https://projecteuler.net/problem=1 //

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 $1000$.

const solution = Array.from({length: 1000}).reduce( (p, n, i) => p + (i % 3 === 0 || i % 5 === 0 ? i : 0), 0 ) console.log(solution)