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
There is a four-digit number made with 1 -9! Its 2nd digit is twice greater than its 3rd. The sum of all the digits is thrice gr
There is a four-digit number made with 1 -9! Its 2nd digit is twice greater than its 3rd. The sum of all the digits is thrice gr
admin
2019-03-19
72
问题
There is a four-digit number made with 1 -9! Its 2nd digit is twice greater than its 3rd.
The sum of all the digits is thrice greater than its last digit! The product of its 3rd and 4th digits is 12 times greater than the ratio of its 2nd to 3rd. What is it?
选项
答案
7638
解析
(这是一个四位数,第二个是第三个的两倍,有四种可能,2,1;4,2;6,3;8,4;然后设第四个数为a,第一个数为b,那么先假设第二第三位数为2,1,则a=12*2=24>9,不符合,同理4,2也不符合,如果是6,3,则3a=12*2=24,a=8,8+6+3+b=8*3=24,b=7,则这个四位数为7638,如果是8,4,则4a=12*2=24,a=6,6+8+4+b=6*3=18,b=0<1,不符合,所以,答案为7638。)
转载请注明原文地址:https://kaotiyun.com/show/lrNK777K
本试题收录于:
C类竞赛(非英语专业本科)题库大学生英语竞赛(NECCS)分类
0
C类竞赛(非英语专业本科)
大学生英语竞赛(NECCS)
相关试题推荐
Turninyourcollectionofindustry-suppliedfreebiesandGoodmanwillsendbackafewreplacementpensbearingtheNoFreeLunc
Turninyourcollectionofindustry-suppliedfreebiesandGoodmanwillsendbackafewreplacementpensbearingtheNoFreeLunc
Turninyourcollectionofindustry-suppliedfreebiesandGoodmanwillsendbackafewreplacementpensbearingtheNoFreeLunc
Thereare______mainislandsinNewZealand.
Waiter:Wouldyouliketohaveonebillorseparatebills,sir?John:It’smytreat.Onebill,please.Paul:Youpaidlasttime
Thiscandidatehasfarmorechancesofwinningtheelectionthan______recommendedbytheorganizer.
Determinewhatnumbershouldreplacethequestionmark:16424325612536?
Theyusuallyhavelessmoneyattheendofthemonththan____atthebeginning.
Seedcataloguesfeaturehundredsofdifferentfloweringspecies.Forthepersonjustbeginningagardenthiscanbebewildering,
Whatwastheaverageageoftherunnersatthebeginningofthesurvey?
随机试题
加碱化剂的目的是消除氢离子的干扰。
未经有关部门批准,医师擅自开办诊所,卫生行政部门可采取的措施不包括
A.AAI起搏器B.VVI起搏器C.VAT起搏器D.DDD起搏器E.VOO起搏器测得窦房结恢复时间为2400ms,房室结文氏点为160次/分,可选用
A.当量剂量B.有效剂量C.比释动能D.吸收剂量E.吸收剂量率当身体各部分受到不同程度照射时,对人体造成的总的随机性辐射损伤是
关于总会计师,下列说法正确的有()。
按照(),金融机构可分为金融调控机构和金融运行机构。
外国旅游者在来华途中行李确系丢失,应由()向有关航空公司索赔。
从警察起源上看,()。
下列语句中,正确的是()。
Careforchildrenandolderpeoplehasrecentlyhittheheadlines.Governmentannouncementsonfundingreformshaveputcarefir
最新回复
(
0
)