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pai lie zu he ying yong ti cuo jie ping xi
Author(s): 
Pages: 28
Year: Issue:  10
Journal: Teacher Education

Keyword:  应用题排列组合评析限制条件解题错误组合问题错解中师数学全排列数字;
Abstract: <正> 中师数学课本排列组织应用题,内容独特,种类纷繁,题型多变,部分学生常因审题不仔细,考虑欠周密,忽视限制条件等原因,而造成重复或遗漏,从而导致解题错误。本文就排列组合应用题中解题错误进行评析,以供师生参考。一、分不清排列组合问题例1.从4种菜品中选出3种,分别种在不同土
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