Legality of Cannabis by U.S. Jurisdiction The main article for this category is Mathematical joke.See also: Category:Humour in science Pages in category "Mathematical humor" The following 13 pages are in this category, out of 13 total. This list may not reflect recent changes. Mathematical jokeA All horses are the same colorB Ralph P. Boas Jr.C Cox–Zucker machineG Guillaume William ZinbielH H. PétardI Interesting number paradoxM Leigh MercerN New Math (song)O Peter OrnoP Proof by intimidationR John RainwaterS Strong law of small numbers