Situation: I am throwing trash into a trash can with another trash can next to it on my left and a door on my right.
Alternative situations: Just entered the room through the door on my right and throwing some packages into a trash can in front of me, while another trash can in my 11 o{clock direction is already full. I threw away my trash into the trash can and there was another trash can to my left.
Question: Is the number of trash cans in the room odd or even?