a woman has 7 children ,and exactly half of them are boys.how is it possible?

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/10 14:16:46

a woman has 7 children ,and exactly half of them are boys.how is it possible?
a woman has 7 children ,and exactly half of them are boys.how is it possible?

a woman has 7 children ,and exactly half of them are boys.how is it possible?
Because another children is not yet born and its sex is still unknown.因为另一个孩子尚未诞生,还不知道性别.