function maxOfThree(num1, num2, num3) {
    if (num1 > num2 && num1 > num3) {
        return num1;
    } else if (num2 > num1 && num2 > num3) {
        return num2;
    } else if (num3 > num1 && num3 > num2) {
        return num3;
    } else if (num1 === num2 === num3) {
        return "These numbers are identical.";
    } else if (num1 === num2 || num2 === num3 || num1 === num3) {
        // In case two numbers were the same:
        if (num1 > num2) {
            return num1;
        } else if (num2 > num3) {
            return num2;
        } else if (num3 > num1) {
            return num3;
    } else {
           // In case the input were not numbers:
           return undefined;
    }
}