Multiples of 3 or 5

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 the provided parameter value number.

Solutions

Solution: 1

function multiplesOf3Or5(number) {
  let sum = 0;
  for(let i=1;i<number;i++){
    if((i % 3 ==0)||(i%5 ==0)){
      sum += i;
    }
  }
  return sum;
}