function combinations(arr) {
    let combinations = 0;
    let combinationFound = false;

    for (let i = 0; i < arr.length; i++) {
        arr[i] = Number(arr[i]);
    }

    for (let i = (arr[0]); i <= arr[1]; i++) {
        for (let j = arr[0]; j <= Number(arr[1]); j++) {
            combinations++;
            if (i + j == arr[2]) {
                console.log(`Combination N:${combinations} (${i} + ${j} = ${arr[2]})`);
                combinationFound = true;
                break;
            }
        }
        if (combinationFound) {
            break;
        }
        if (!combinationFound) {
            console.log (`${combinations} - neither equals ${arr[2]}`);
        }
    }
}