首页
登录
职称英语
A certain jar contains 100 jelly beans: 50 white, 30 green, 10 yellow, 5 red, 4
A certain jar contains 100 jelly beans: 50 white, 30 green, 10 yellow, 5 red, 4
游客
2025-02-24
35
管理
问题
A certain jar contains 100 jelly beans: 50 white, 30 green, 10 yellow, 5 red, 4 purple, and 1 black. If a jelly bean is to be chosen at random, what is the probability that the jelly bean will be neither purple nor red?
选项
A、0.09
B、0.11
C、0.55
D、0.91
E、0.96
答案
D
解析
一个罐子中装有100粒果冻豆:50粒白的,30粒绿的,10粒黄的,5粒红的,4粒紫的,l粒黑的。若从中随机挑出一粒果冻豆,问该粒果冻豆既不是紫色,又不是红色的概率是多大?
解:本题的正确答案是(D)。因为红色有5粒,紫色有4粒,且挑出任一粒的概率相同,所以随机挑出的果冻豆既不是红色又不是紫色的概率为:(100-9)/100=0.91
转载请注明原文地址:https://www.tihaiku.com/zcyy/3971455.html
相关试题推荐
The10householdsonacertainstreethavehouseholdincomesthatrangefrom$34
Thebuyerofacertainmechanicaltoymustchoose2of4optionalmotionsand4
Sixty-eightpeoplearesittingin20carsandeachcarcontainsatmost4people
Aresearchscientistwantstostudyacertainattributeofdogs.Itisestimated
Acertainmoneymarketaccountthathadabalanceof$48,000duringalloflast
Acertainrectanglehasperimeter54.Iftheratioofthelengthoftherectangl
Thescoresreportedforacertainmultiple-choicetestwerederivedbysubtracti
Whenacertainnumberisdividedby7,theremainderis0.Iftheremainderisn
Theoddsthatacertaineventwilloccuristheratiooftheprobabilitythatth
Whatisthecost,incents,ofusingacertainfaxmachinetosendnpagesofa
随机试题
Thisexpansionofrightshasledtobothaparalysisofthepublicserviceandt
WhichofthefollowingstatementsisNOTtrue?[br][originaltext]Thebrai
Whatisthefocusofthewoman’spresentation?[br][originaltext]F:Hi,Profes
AmongAmericaninnovators,nobodycomesclosetothedefininglegacyofStev
[originaltext]M:Hi,Minnie,howareyoudoing?W:Prettygood.Thanks.[5]Have
老年人某些手术选择局麻的优点有()A.减少术后中枢神经功能障碍 B.减少麻
医院内感染主要发生在()A.门诊、急诊病人 B.探视者 C.医务人员
思维改变行为,观念________命运,四十年改革开放的历程,就是不断解放思想的
675,225,90,45,30,30,()。 a.27b.
下面是一位教师的教育案例: 为了让班会开得更成功,我为我们班选了一篇课文改写
最新回复
(
0
)