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
2024-01-13
8
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/3360111.html
相关试题推荐
Concerningmoneyoranythingelse,conflictsbetweenhusbandandwifeusuall
Concerningmoneyoranythingelse,conflictsbetweenhusbandandwifeusuall
Concerningmoneyoranythingelse,conflictsbetweenhusbandandwifeusuall
Icanhardly______thedifferencebetweenthesetwowords.A、pointB、speakC、talk
Concerningmoneyoranythingelse,conflictsbetweenhusbandandwifeusuall
Concerningmoneyoranythingelse,conflictsbetweenhusbandandwifeusuall
Concerningmoneyoranythingelse,conflictsbetweenhusbandandwifeusuall
Concerningmoneyoranythingelse,conflictsbetweenhusbandandwifeusuall
______thecause,thehatebetweenthesemengrewdeeperanddeeper.A、WhatB、Wha
The____goalofthebookistohelpbridgethegapbetweenresearchandteachin
随机试题
Archaeologistshavelongthoughtthatstoneshipsservedasgravesforoneo
Therearetwosortsofpeopleintheworld,whowithequaldegreesofhealth,
Thepicture,______shepaid$5,000,wasonceownedbyanoldartist.A、inthat
患儿女性,2岁,左鼻塞、涕中带血伴恶臭10天。诊断应首先考虑A.左鼻窦炎 B.
煅制石决明的作用是A.增强平肝潜阳的作用B.增强寒凉之性C.增强固涩收敛、明目作
线在中国岩画中较为常见,同样是在用线表现动物的形象,西方岩画的线描更多的是着眼于
下列能的转化中,属于化学能转化为内能的是() A.植物吸收太阳光进行光合作用
一般而言,影响河流水质状况的污染负荷、源和汇不包括( )。A.来自城市下水道系
限额设计的实施是建设工程造价目标的()过程。A.目标制定和目标分解 B.
5岁男孩,生长发育迟缓,畏食,有异食癖。一个月前,手部划伤,伤口一直没有愈合。其
最新回复
(
0
)