id: 06109070 dt: j an: 2012f.01094 au: van Dalen, Birgit ti: House numbers and copper thieves. (Huisnummers en koperdieven.) so: Euclides 87, No. 5, 205-207 (2012). py: 2012 pu: Nederlandse Vereniging van Wiskundeleraren (NVvW), Zoetermeer la: NL cc: U40 D60 ut: mathematical contest; problems ci: li: ab: The author reports the tasks and results of an arithmetic contest. rv: Martin Winter (Vechta)