早教吧 育儿知识 作业答案 考试题库 百科 知识分享

Thereare3redmarbles,4greenmarbles,2yellowmarbles,and5bluemarblesinabag.Onceamarblesisdrawn,itisnotreplaced.Findtheprobabilityofeachoutcome.Question:1,Twoyellowmarblesinarow.2,Twobluemarblesinarow.3,abluethenagr

题目详情
There are 3 red marbles,4 green marbles,2 yellow marbles,and 5 blue marbles in a bag.Once a marbles is drawn,it is not replaced.Find the probability of each outcome.
Question:
1,Two yellow marbles in a row.
2,Two blue marbles in a row.
3,a blue then a green marble
4,a yellow then a red marble
5,a blue marble,a yellow marbles,and then a red marble
6,three green marbles in a row
算了我已经做完了,你们投票吧
▼优质解答
答案和解析
我还是把题目帮你翻下吧?
有3个红色弹珠,4个绿色弹珠,2个黄色弹珠和5个蓝色弹珠在一个袋子里.当这些弹珠被拿出时,就不会被替换了.算出以下情况的概率.
应该理解了吧?
因为3-6的答案我不是很确定,所以还是不要乱讲好了= =|||
1,2题的答案应该都是七分之一吧?
我倒是很好奇你是不是刚出国?
这题目让某人回忆我穷啊啊啊啊>