a woman has 7 children ,and exactly half of them are boys. how is it possible?
展开全部
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。
本回答由提问者推荐
已赞过
已踩过<
你对这个回答的评价是？
推荐律师服务：
若未解决您的问题，请您详细描述您的问题，通过百度律临进行免费专业咨询
