排列组合之乘法原理探索  

Research on the Multiplicative Principle of Permutation and Combination

作　　者：陈明[1] 

机构地区：[1]遵义师范学院数学系,贵州遵义563002

出　　处：《黔南民族师范学院学报》2007年第6期37-38,41,共3页Journal of Qiannan Normal University for Nationalities

摘　　要：排列组合在中学数学内容中,是学生普遍感到困难的部分。本文用现代数学的语言给予解释和说明。In the math class of the middle school, permutation and combination is the part which is felt generally difficult by students. This article gives out explanations and illustrations in the language of modem mathematics.

关 键 词：乘法原理 集合 关系 单射 陪集 分类 

分 类 号：G633.6[文化科学—教育学]