When two vehicles arrive to an intersection at the same time, which one has the right-of-way when no signs or signals indicate rules?

1. The car approaching from the right has the right-of-way.
2. The car approaching from the left has the right-of-way.
3. The car in which the driver sounds his horn first has the right-of-way.
4. The car that is traveling the fastest has the right-of-way.