3-5-8 for the following: This variation of a variation plays 9-5-2 with the following changes: This variation was played in the 70s and 80s at University High School in Urbana, Ill. Play is as before with each aiming for 9, 5 and 3 respectively, except: 3-5-8 3-5-8, also known as Sergeant Major for its popularity among members of Britain's Royal Air Force, is a trick-taking card game for 3 players, using a standard 52 card deck. 3-5-8 may be played as a gambling game, or not, and there are many variations with names like "8-5-3" and "9-5-2" played throughout the world.
9-orthoplex 9-orthoplex In geometry, a 9-orthoplex or 9-cross polytope, is a regular 9-polytope with 18 vertices, 144 edges, 672 triangle faces, 2016 tetrahedron cells, 4032 5-cells "4-faces", 5376 5-simplex "5-faces", 4608 6-simplex "6-faces", 2304 7-simplex "7-faces", and 512 8-simplex "8-faces". It has two constructed forms, the first being regular with Schläfli symbol {3,4}, and the second with alternately labeled (checkerboarded) facets, with Schläfli symbol {3,3} or Coxeter symbol 6. It is one of an infinite family of polytopes, called cross-polytopes or "orthoplexes". The dual polytope is the 9-hypercube or enneract. There are two Coxeter groups associated with the 9-orthoplex, one regular,