自国际二十届中学生数学竞赛第六题(六社团问题)刊布以来,国内教育界对抽屉原则问题引起了广泛的兴趣。一位数学家说过一句至理铭言:“数学不过是精炼的常识罢了”。抽屉原则可以充当这一铭言的“证人”。抽屉原则是从日常生活中最一般的常识抽拿出来的:比如,“将十个苹果分放到九个抽屉中去,那么至少有一个抽屉放有两个苹果。”“+ Since the publication of the sixth issue of the 20th International Mathematics Competition for Middle School Students (Six Community Issues), the domestic education community has aroused widespread interest in the principle of drawers. A mathematician said a word of reason: “Mathematics is nothing more than refined knowledge.” Drawer principle can serve as “witness” for this inscription. The principle of drawers is drawn from the most common common sense in everyday life: for example, “put ten apples in nine drawers, then there are at least one drawer with two apples.”