Dieses Buch bietet eine Sammlung von Mathematikr tseln und -aufgaben, um die Neugierde und das Wissen von Lesern zu f rdern, die sich mit Mathematik besch ftigen m chten. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may...