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Multiples of 3 and 5

27 days ago

 30/04/2019


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.

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package main

import "fmt"

func main() {
	sum := 0
	for i := 0; i < 1000; i++ {
		if i%3 == 0 || i%5 == 0 {
			sum += i
		}
	}
	fmt.Print(sum, "\n")
}

Answer:

233168