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笔者在对2013年安徽高考理科数学第21题进行分析研究时,发现第二问解法容易给读者造成误解,有值得商榷的地方.现将试题、参考答案、出现的问题及改进解法附录如下,以供同行批评指正.原题呈现某高校数学系计划在周六和周日各举行一次主题不同的心理测试活动,分别由李老师和张老师负责.已知该系共有n位学生,每次活动均需该系k位学生参加(n和k都是固定的正整数).假设李老师和张老师分别将各自活动通知的
When I analyze the 21st math math test in Anhui college entrance examination in 2013, I find that it is easy for readers to misunderstand the second question solution, which is worth discussing. Now, the questions, reference answers, problems and solutions are as follows, For the peer criticism and correction.The original title presented a mathematics department of a university plans to hold a theme of different psychological testing activities on Saturday and Sunday, respectively, by teacher Li and teacher Zhang.It is known that the Department has a total of n students, each time All students are required to participate in the activity (n and k are both positive integers). Suppose Teacher Li and Teacher Zhang inform each other of their activities