首页
登录
职称英语
If x and y are integers between 10 and 99, inclusive, is [img]2022m10x/ct_ve0120
If x and y are integers between 10 and 99, inclusive, is [img]2022m10x/ct_ve0120
游客
2025-02-27
31
管理
问题
If x and y are integers between 10 and 99, inclusive, is
an integer?
(1) x and y have the same two digits, but in reverse order.
(2) The tens’ digit of x is 2 more than the units’ di git, and the tens’ digit of y is 2 less than the units’ digit.
选项
A、Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B、Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C、BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D、EACH statement ALONE is sufficient.
E、Statements (1) and (2) TOGETHER are NOT sufficient.
答案
A
解析
Determine whether
is an integer, where x and y are 2-digit integers.
(1) From (1), if x = 10a + b, then y =10b + a. It follows that x-y= 9(a - b), so
is an integer; SUFFICIENT.
(2) From (2), if x = 10a + b, then a = b + 2. If y = 10r + d, then c = d- 2. It is possible that
is an integer (for example, if x = 75 and y = 57), and it is possible that
is not an integer (for example, if x = 75 and y = 46); NOT sufficient.
The correct answer is A;
statement 1 alone is sufficient.
转载请注明原文地址:https://tihaiku.com/zcyy/3974673.html
相关试题推荐
______thatthetradebetweenthetwocountriesreacheditshighestpoint.A、Duri
Concerningmoneyoranythingelse,conflictsbetweenhusbandandwifeusually
Concerningmoneyoranythingelse,conflictsbetweenhusbandandwifeusually
Ican’ttellthe______differencebetweenthetwinsisters.A、slightB、simpleC、sl
Icanhardly______thedifferencebetweenthesetwowords.A、pointB、speakC、talk
The______goalofthebookistohelpbridgethegapbetweenresearchandteachin
Concerningmoneyoranythingelse,conflictsbetweenhusbandandwifeusu
Concerningmoneyoranythingelse,conflictsbetweenhusbandandwifeusu
Fromthegoosethatlaidthegoldeneggtotheracebetweenthetortoise
Fromthegoosethatlaidthegoldeneggtotheracebetweenthetortoise
随机试题
[img]2012q2/ct_epej_epelist_0141_20124[/img][originaltext]F:TheplanetoShang
Whatmaybetherelationshipbetweenthespeakers?[br][originaltext]M:Goodm
InEnglish,thecolorgreenisassociatedwithjealousy,whichissometimes
自律期
国家主要通过“综合定额加专项补助法”来规定高等学校的年经费开支标准。()
以下关于入侵检测设备的叙述中,()是不正确的。A.不产生网络流量 B.使用在尽
下列费用项目中,属于建筑安装工程企业管理费的有()。A.养老保险费 B.
48岁已婚妇女,因胆道感染入院,应用抗生素10天,近一周来外阴痒明显。检查发现阴
下列关于氯喹的正确叙述是A.杀灭血中配子体 B.对疟原虫红外期有杀灭作用 C
在英国,视网膜母细胞瘤的病例占婴儿出生第一年所患癌症病例的11%,患这种疾病的儿
最新回复
(
0
)