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～
In a box of 10 balls, 4 are red while 6 are blue. What is the probability that all the 3 balls are red when randomly selecting 3 balls out of the box without replacement?
Give your answer as a fraction.
Give your answer as a fraction.
1 /30显示答案
以上解析由 考满分老师提供。
