Number Pools And Guaranteed Combinations Within Fixed StringsSep 03, 2008, 10:31 (0 Talkback[s])
(Other stories by Mike Tremell)
[ Thanks to Mike Golvach for this link. ]
"Simple deduction will lead you to this answer, since there can be only one correct answer (Which, in a sense, is true of larger systems, as well) and our variables are equal. Our result would be 1 variation:"