首页
登录
职称英语
When a certain number is divided by 7, the remainder is 0. If the remainder is n
When a certain number is divided by 7, the remainder is 0. If the remainder is n
游客
2024-01-12
40
管理
问题
When a certain number is divided by 7, the remainder is 0. If the remainder is not 0 when the number is divided by 14, then the remainder must be ?
选项
A、1
B、2
C、4
D、6
E、7
答案
E
解析
某数被7除时余数为0,若被14除时余数不为0,那么余数一定是
解:本题的正确答案为(E)。该数是7的倍数,可分两种情况:(1)该数是7的奇数倍,可写成:7n=7×(2k+1)=14k+7,其中n=2k+1; (2)该数是7的偶数倍,可写成:7n=7×2k=14k,其中n=2k;由以上可知,当该数不能被14整除时,其余数一定是7。
转载请注明原文地址:https://www.tihaiku.com/zcyy/3356705.html
相关试题推荐
Thegrowthofachildisinfluencedbyanumberoffactors,______arebeyondour
TheAmericanandtheBritish______alargenumberofsocialcustoms.A、joinB、tak
Thenumberofprimaryschoolsintheruralareas______doublinginthepast50ye
Normallyastudentmustattendanumberofcoursesinordertograduate,and
Normallyastudentmustattendanumberofcoursesinordertograduate,and
Normallyastudentmustattendanumberofcoursesinordertograduate,and
Ofcourseacertainamountofdependenceonothersisnotonlygood,butneces
Staffhavebeenholdinganumberof_________toraisemoneyforcharity.A、events
Staffhavebeenholdinganumberof________toraisemoneyforcharity.A、eventsB
Givemeyourtelephonenumber,________Ineedyourhelp.A、whetherB、unlessC、ore
随机试题
Thewaypeopleholdtothebeliefthatafun-filled,painfreelifeequalsha
Hisoldshoesclumpedsoundlyinthedustashewalked,andhisgray-blacklocks
[originaltext] (3)TwonephewsofVenezuela’sfirstladyCiliaFloreshaveple
ABluetoothdevicecanbeeitheramaste
男性,78岁,高血压10年,平时血压多为(150~190)/(70~85)mmH
某版语文教材后由一道“探究?练习”题,题目是“课文写景状物,意在表达对生命的思考
下列关于遗产继承顺序的表述中,错误的是()。A.遗嘱继承先于遗赠扶养协议
婴儿腹泻口服补液时,口服补液盐(ORS)的配方是A.氯化钠3.5g;氯化钾2.5
(2018年真题)根据《国务院办公厅关于进一步加强乡村医生队伍建设的指导意见》等
下列哪一项符合大叶性肺炎A.多发生于儿童 B.多发生于青年 C.多发生于老年
最新回复
(
0
)