首页
登录
职称英语
The following data sufficiency problems consist of a question and two statements
The following data sufficiency problems consist of a question and two statements
游客
2024-01-14
44
管理
问题
The following data sufficiency problems consist of a question and two statements, labeled (1) and (2), in which certain data are given. You have to decide whether the data given in the statements are
sufficient
for answering the question. Using the data given in the statements
plus
your knowledge of mathematics and everyday facts (such as the number of days in July or the meaning of counterclockwise), you must indicate whether
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. [br] If a is an integer, is b an integer?
(1) The average (arithmetic mean) of a and b is an integer.
(2) The average (arithmetic mean) of a, b, and b+4 is a.
选项
答案
D
解析
alone is sufficient; the statement can be restated as (a+b)/2 is an integer; no non-integer divided by an integer--in this case, 2--is going to yield an integer, so a+b must be an integer, and therefore b must be an integer. (2) alone is sufficient; the statement can be restated as a+2b+4=3a, so b+2=a; we know that a is an integer, and any integer plus 2 is an integer, so b must be an integer.
转载请注明原文地址:https://tihaiku.com/zcyy/3360361.html
相关试题推荐
Studythefollowingcartooncarefullyandwriteanessayonit.Inyouressay,
InWesternculture,anengagementbeginswith"yes"toasimplequestion:"W
InWesternculture,anengagementbeginswith"yes"toasimplequestion:"W
InWesternculture,anengagementbeginswith"yes"toasimplequestion:"W
他每天必须处理许多问题。Hehastodealwithmanyproblemseveryday.
Whilebeingquestionedonthecourt,themandenied______theoldlady’snecklac
Thatstudent______hishandeverytimeIaskedaquestion.A、madeupB、putupC、r
______thelastone,Iansweredallthequestions.A、ExceptB、ExceptforC、Beside
Whatdoweknowfromthefirstparagraph?[br]Whichofthefollowingistrueac
Inmakingmarketinvestigation,oneshould______.[br]Whichofthefollowings
随机试题
Manythingsarenaiveandridiculousinourchildhoodin______andwewillneve
"ButIjustpaid$1.69forthisbottleofwinelastweek.Howcometheprice
劳务分包是工程承包人将建筑工程施工中的劳务作业发包给()其他劳务企业的行为。A
A.色散力 B.色散力、诱导力 C.色散力、诱导力、取向力 D.色散力、诱
生成树协议STP使用了哪两个参数来选举根网桥( )。A.网桥优先级和IP地址
吊板是供个体使用的具有防坠功能的沿建筑物立面自上而下移动的无动力载人用具。下列选
下列建筑中可为三级耐火等级的建筑的是()。A.建筑面积不大于500m2的独立甲、
关于大肠杆菌DNA连接酶的叙述,正确的是A.催化双链DNA分子中两相邻DNA片段
下列选项中,属于利率期货的有()。A.3个月欧洲美元期货 B.3个月欧洲
无负荷试车成功后,经( )检查确认具备投料试车后,方能进入投料试车运行阶段。A.
最新回复
(
0
)