Question: what is the relationship between the number of images and the angle between the mirrors?
Answer: The number of images is 360/x, where x is the angle between the two mirrors. If the angle x is 60 there will be 5 images plus the one object that is reflected by the two mirrors. In a barber's saloon the mirrors are placed parallel, one in front of you and the other behind you. So there will be infinite images.