首页
登录
职称英语
A box contains 5 orange disks, 4 red disks, and 1 blue disk. You are to select t
A box contains 5 orange disks, 4 red disks, and 1 blue disk. You are to select t
游客
2024-01-12
26
管理
问题
A box contains 5 orange disks, 4 red disks, and 1 blue disk. You are to select two disks at random and without replacement from the box. What is the probability that the first disk you select will be red and the second disk you select will be orange?
选项
答案
2/9
解析
To solve, you need to calculate the following two probabilities and then multiply them.
The probability that the first disk selected from the box will be red
The probability that the second disk selected from the box will be orange, given that the first disk selected from the box is red
The probability that the first disk you select will be red is
. If the first disk you select is red, there will be 5 orange disks, 3 red disks, and 1 blue disk left in the box, for a total of 9 disks. Therefore, the probability that the second disk you select will be orange, given that the first disk you selected is red, is
. Multiply the two probabilities to get
.
转载请注明原文地址:https://tihaiku.com/zcyy/3355388.html
相关试题推荐
Steve:Wouldyoulikeanythingtodrink?IhaveSpriteandorangejuice.Bob:__
Ajarcontainsonlyred,yellow,andorangemarbles.Ifthereare3red,5yello
Ifathree-digitnumberisselectedatrandomfromtheintegers100to999,incl
Sixdifferentnumbersaretobeselectedfromthe(0,1,2,3,4,5,6)tocompos
Select4peoplefrom3boysand3girls.Whatistheprobabilityoftwoboysand
BenandAnnareamong7contestantsfromwhich4semifinalistsaretobeselecte
Howmanycubiccentimetersofasolutionthatcontains15gramsofglucoseper1
Select3peoplefrom4couplestoformagroup.Twopeopleofonecouplecannot
Woodsmokecontainsdangeroustoxinsthatcausechangesinhumancells.Becausew
Onerandomlyselectedgroupsawaspeakerlectureonenvironmentalethicstoal
随机试题
A、Thecrestedguanhasaredthroatpouch,givingtheimpressiontoitsmatetha
说明:按电话留言的格式和要求,以秘书Mary的名义,给Mr.Smith写一份电话留言,包括以下内容。1.来电人:出口部门的Mr.Hu2.来电时
激励的出发点是( )。A.人的需求 B.动机 C.人的心理 D.人的行为
破坏阶段有明显三个阶段的地基破坏形式为:A.整体剪切破坏 B.刺入式破坏 C
疾病的发展方向取决于A、机体的抵抗能力 B、病因的数量与强度 C、是否存在诱
多层金字塔以在萨卡拉的()为代表。A.库夫金字塔 B.昭塞尔金字塔 C
一般家庭寄养结案的时间为寄养儿童年满()之时。A.12周岁 B.15周岁
表层皮片含有A.表皮层 B.表皮+真皮全层 C.表皮+真皮最上层乳突层 D
1.背景 某金属矿山建设工程项目,承包商为了避免今后可能支付延期赔偿金的风险,
某地一位司机在车祸中受重伤,被同行的人送到附近一家医院抢救。经查:病人多发性骨折
最新回复
(
0
)