Using your Head is Permitted

Welcome to the "Using your Head is Permitted" monthly math riddle page.

Links to past riddles and solutions are from this page. If you know any good riddles that you think might fit in, you're welcomed to send them to the puzzlemaster at riddlesbrand.scso.com. The puzzlemaster is Michael Brand.

September 2010 Riddle Solution Gloved Prisoners
August 2010 Riddle Solution Tetrahedron Crossing
July 2010 Riddle Solution A Tribute to Gardner
June 2010 Riddle Solution Cyclic Permutations
May 2010 Riddle Solution Segment-preserving Mappings
April 2010 Riddle Solution Self Assembled Numbers
March 2010 Riddle Solution Taylor Series
February 2010 Riddle Solution Laura Sort
January 2010 Riddle Solution Encyclopedia Sort

(Riddles from previous years have been archived.)

Enjoy!