Impossible Riddel.

[/B/rodigyz]

Well there are many possibilities to this question as this question does not limit you on what items there are in the room.
The question did not say that there is a roof.
(now say that there was a grappling hook and you can use that to get out)

Also the question doesn't describe the height of the room. if it's like 5 feet, you can easily climb over it.

Another is the strength and material of the wall. Is the wall made out of really breakable glass? Can you simple just punch your way out?

The possibility is endless, just you have to think outside of the room (box ;) )

I would laugh if this is the right answer

but my real answer.

You look at the mirror and you see what you saw.
Now there is a saw.
Now time to cut the table into 2 halves
as we all know, 1 half + 1 half = a whole
Simply we just crawl, or possible walk through the hole.

The riddle's answer only sounds right when you actually say it