首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
In a group of 80 students, 24 are taking physics, 40 are taking mathematics, and 20 are taking both physics and mathematics. If
In a group of 80 students, 24 are taking physics, 40 are taking mathematics, and 20 are taking both physics and mathematics. If
admin
2021-10-21
32
问题
In a group of 80 students, 24 are taking physics, 40 are taking mathematics, and 20 are taking both physics and mathematics. If a student were’ randomly selected from all of the 80 students, what is the probability that the student selected are taking neither physics nor mathematics?
选项
A、0.20
B、0.25
C、0.45
D、0.55
E、0.60
答案
C
解析
设集合A是注册物理的同学,集合B是注册数学的同学,那么A=24,B=40,AB=20,T=8,T=A+B-AB+N,代入后得到:80=24+40-20+N,N=36,即两门课都没有注册的人数为36,那么所求概率为36/80=0.45。
转载请注明原文地址:https://kaotiyun.com/show/KCtO777K
本试题收录于:
GMAT QUANTITATIVE题库GMAT分类
0
GMAT QUANTITATIVE
GMAT
相关试题推荐
NationalAviationandSpaceAdministration(NASA)anditspartnersintheInternationalSpaceStationhaveagreedinprincipleto
Onceuponatimeapoorfarmertakingasackofwheattothemilldidnotknowwhattodowhenitslippedfromhishorseandfel
Todayanyonewillacceptmoneyinexchangeforgoodsandservices.Peopleusemoneytobuyfood,furniture,books,bicyclesand
Thetopoftheworldisawonderland.Inwinter,thetemperatureoftenfallsto-30°Fandthesunneverrises.Theoceanissurr
ItwasabeautifulsummerdayandIwastakingawalkinthedowntownareaofMadrid.WhenIturnedastreet【C1】______Iheardth
Thetopoftheworldisawonderland.Inwinter,thetemperatureoftenfallsto-30°Fandthesunneverrises.Theoceanissur
IntheUnitedStatesduring1992,anyfamilyoffourwithanannualcashincomeoflessthan$14,335(beforetaxes)wasconsider
Mancannotgoonincreasinghisnumberatthepresentrate.Inthenext30yearsmanwillfaceaperiodofcrisis.Someexperts
Thecomputersmadebyourcompanysellbest,butseveralyearsagonoonecouldhaveimaginedtheroleinthemarketsthatthey_
EachofQuestions1to7presentstwoquantities.QuantityAandQuantityB.Comparethetwoquantities.Youmayuseadditional
随机试题
Inorderto______agoodknowledgeofEnglish,hegaveuphisjobandwenttostudyinanEnglishschool.
A.往来寒热B.夜热早凉C.皮肤蒸热D.身热夜甚E.壮热烦渴
发生于种植体周软组织的炎症性损害称为
应收账款保理是企业将赊销形成的未到期应收账款在满足一定条件的情况下,转让给保理商,其作用体现在()。
波士顿矩阵中,相对市场占有率是拿本企业的占有率同()的市场份额进行比较。
商鞅变法的措施中对秦国建立中央集权制度影响最大的是()。
在人文教育与科学教育的关系问题上,应该坚持的是()。
甲、乙、丙三队要完成A、B两项工程。B工程的工作量比A工程的工作量多25%,甲、乙、丙三队单独完成A32程所需的时间分别是20天、24天、30天。为了共同完成这两项工程,先派甲队做A工程,乙、丙两队做B工程;经过几天后,又调丙队与甲队共同完成A工程。问乙
在算法正确的前提下,评价一个算法的两个标准是【】。
Minipresentation’—about6minutesInthispartofthetestyouareaskedtogiveashorttalkonabusinesstopic.Youhaveto
最新回复
(
0
)