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
2025-02-23
41
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/3969950.html
相关试题推荐
Supposeyouwanttoselecta3-personcommitteefromagroupof9students.How
Fromasetof100numbers,halfwereselectedtoformgroupI,and60percentof
Supposexandyareselectedrandomlyfromtheset{1,2,3,4,5}andtheycan
Fourdifferentpersonswillbeselectedfrom2menand5womentoserveonacom
xisselectedfromsetX{-1,3,6}andyisselectedfromsetY{-2,4,5,7}Qu
Sixdifferentnumbersaretobeselectedfromthe(0,1,2,3,4,5,6)tocompos
Select4peoplefrom3boysand3girls.Whatistheprobabilityoftwoboysand
Acertainjarcontains100jellybeans:50white,30green,10yellow,5red,4
A、containsmorethermalventsthantheadultenvironmentB、receivesmoreofits
Darwinproposedthetheoryofsexualselectiontoexplaintheoriginof
随机试题
ThreeTipstoImproveYourPublicSpeakingSkills1.Children
Shynessisthecauseofmuchunhappinessforagreatmanypeople.Shypeople
TheUniversityBookstoreisaself-supportinguniversity-ownedorganization,
沥青路面的渗水系数测试时,当水面下降速度较慢,()可停止。A.测定3min
有机磷农药主要急性毒性是()。A.抑制胆碱酯酶的活性 B.血液系统障碍
在行政法的分类中,特别行政法也称部门行政法,是对特别行政关系和监督行政关系调整的
2020年12月16日至18日,中央经济工作会议在北京举行。会议分析指出,中国经
社会主义民主政治的本质和核心是()。A.人民当家作主 B.无产阶级专政
按照第一版巴塞尔资本协议,银行的核心资本不包括()。A.资本公积 B.盈余公
(2018年真题)境内单位和个人发生的下列跨境应税行为中,适用增值税零税率的是(
最新回复
(
0
)