AoPS Wiki:Article of the Day
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AoPSWiki has an Article of the Day (AoTD) system, which recognizes the articles on the AoPS Wiki which cover mathematical topics most comprehensively and accurately.
The AotDs are picked by the administrators of the AoPS Wiki, but members can suggest AotDs by leaving a message on the talk page of either azjps or Temperal.
You can include the current AotD on your userpage with
<dailyfeaturedpagetitle></dailyfeaturedpagetitle>
<dailyfeaturedpage></dailyfeaturedpage>
Current AotD
The current AotD is:
Three mutually tangent spheres of radius 
rest on a horizontal plane. A sphere of radius 
rests on them. What is the distance from the plane to the top of the larger sphere?
