sum = function(...args)  {
    return args.filter(num => num % 2 !== 0).reduce((acc, num) => acc + num, 0);
}

sum = function(...args) {
    let total = 0;
    for (let num of args) {
        if (num % 2 !== 0) {
            total += num;
        }
    }
    return total;
}