最新提问
我的动态
登录后查看动态
题目内容双击单词支持查询和收藏哦～
5 balls are in a box, including 1 red ball and 4 green balls. Of a volunteer picks up 2 balls randomly from the box, what is the probability that both balls are green?
Give your answer as a fraction.
3 /5显示答案
· 相关考点
6.4.1 古典概率
6.4.1 古典概率
以上解析由 考满分老师提供。
