AoPS Wiki:Problem of the Day/June 25, 2011
< AoPS Wiki:Problem of the Day
Revision as of 16:40, 24 June 2011 by Btilm305 (talk | contribs) (Protected "AoPSWiki:Problem of the Day/June 25, 2011": Problem of the Day ([edit=sysop] (indefinite) [move=sysop] (indefinite)))
Let and be two arithmetic progressions. The set is the union of the first terms of each sequence. How many distinct numbers are in ?