A policeman left his police post and proceeded 4 km South on hearing a loud sound from point A. On reaching the place, he heard another sound and proceeded 4 km to his left to point B. From B, he proceeded left to reach another place C, 4 km away. In which direction, he has to go to reach his police post?
For reaching Police posts from C (starting point) policemen will have to move in the West direction.