答案及解析：[单选题]Let's reivew Pigeon-Hole Principal. We can assume that there are about 150,000 hairs on a perso - 理学类题库- 答案窝(daanwo.com)-大学生作业答案及考资分享平台

问题：

[单选题]Let's reivew Pigeon-Hole Principal. We can assume that there are about 150,000 hairs on a person's head. There are more than 1,000,000 people in Beijing. Thus there are at least two persons with the same count of hairs.
我们来复习一下鸽巢原理。我们首先假定常人的头发数在15万左右，而北京的人口大于100万，那么北京至少有两个人的头发一样多。
ACorrect (正确)
BWrong (错误)