In a room, there are some chairs and some people. If on each chair, only one person is seated, then there is no chair for exactly one person. If on ea...
Question
In a room, there are some chairs and some people. If on each chair, only one person is seated, then there is no chair for exactly one person. If on each chair, two persons sit, then there is one vacant chair. What is the number of chairs in the room?