最新提问
我的动态
登录后查看动态
题目内容
Of the 750 participants in a professional meeting, 450 are female and $$\frac{1}{2}$$ of the female and $$\frac{1}{4}$$ of the male participants are less than thirty years old. If one of the participants will be randomly selected to receive a prize, what is the probability that the person selected will be less than thirty years old?
D显示答案
以上解析由 考满分老师提供。