首页
登录
职称英语
If a three-digit number is selected at random from the integers 100 to 999, incl
If a three-digit number is selected at random from the integers 100 to 999, incl
游客
2025-02-27
38
管理
问题
If a three-digit number is selected at random from the integers 100 to 999, inclusive, what is the probability that the first digit and the last digit of the integer will both be exactly two less than the middle digit?
选项
A、1:900
B、7:900
C、9:1,000
D、1:100
E、7:100
答案
B
解析
There are exactly 7 digits out of the 900 for which this statement is true: 131, 242, 353, 464, 575, 686, 797; that equals a probability of 7 out of 900.
转载请注明原文地址:https://www.tihaiku.com/zcyy/3974999.html
相关试题推荐
Whichofthefollowingcannotbethemedianoffivepositiveintegersa,b,c,d
Ifxisapositivenumberand1/2thesquarerootofxisthecuberootofx,th
Threehundredmultiplesofthreearepickedatrandom,andthreehundredmultipl
Ifx,y,andzarepositiveintegers,and4x=5y=6z,thentheleastpossiblevalu
Thereare450birdsatasmallzoo.Thenumberofbirdsis5timesthenumberof
Forany3givennumbers,whichofthefollowingisalwaysequivalenttoaddingt
Whatisthesmallestpossiblecommonmultipleoftwointegerswhicharebothgre
Whatisthegreatestpossiblecommondivisoroftwodifferentpositiveintegers
ListA,BandCmeansthelistofmultiplesofprimenumbers2,3,and5respect
Themedianoffivedifferentpositiveintegersis12,whichofthefollowingis
随机试题
Howmanytimeshavethedoctorstestedthechildrenforfiveyears?[br]Doctor
Mr.Greensaidhisclients______oursamplesbytheendoflastmonth.A、didn’t
Completetheformbelow.WriteONEWORDAND/ORANUMBERforeachanswer.[img]20
Forthefollowingconversation:A:DoyouknowwhereXiaoWangis?B:I’mbusy.___
WilliamWrigleyJr.,theAmericanchewing
下列有关胶囊剂特点的叙述,错误的是A.生物利用度一般较片剂高 B.可避免肝脏的
女性,46岁,左乳外上象限无痛性肿物3cm直径,与皮肤轻度粘连,左腋下触及2个可
一贯煎的君药是( ) A.生地黄 B.香附 C.川棟子 D.熟地黄
山东:济南:泰山[农行真题]() A.安徽:合肥:黄山 B.陕西:兰州:衡山
在假定总体分布已知的前提下,从总体中按照随机原则抽取样本,并利用样本统计量估计总
最新回复
(
0
)