数学通俗名著系列，适于青少年的科普读物。也适用于高智商娱乐。包括算术游戏、算术趣谈、几何游戏、几何趣谈、多面体、棋盘游戏、幻方、地图染色问题、单行线问题、心算、组合设计、密码分析等。-Mathematics popular classics series, popular science books suitable for young people. Also applies to the highly intelligent entertainment. Including arithmet