There are 20 people in an empty square room. Each person has full sight of
the entire room and everyone in it without turning his head or body or
moving in any way (other than the eyes). Where can you place an apple so
that all but one person can see it?
![[أربيك]](http://www.fundoofun.com/websitetranslator/images/flag_ar.gif){kind=small}
