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
2025-02-27
9
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] For real numbers a, b, and c, is ab=bc+3?
(1) ab=3b
(2) b+3=c
选项
答案
C
解析
To answer this question, the statements have to prove either that the equation above is true or that it cannot be true. (1) alone is insufficient; it allows the equation to be restated as 3b=bc+3, which could be true or not true depending on the values of b and c. (2) alone is insufficient; it allows the equation to be restated as ab=b2+3b+3, which could be true or not true depending on the values of a and b. If the two are combined, the equation can be restated as 3b=b2+3b+3, which can be restated as b2+3=0. Since b is a real number, b2 has to be either a positive number or 0, in which case b2+3=0 cannot be true. Therefore, the equation must be false.
转载请注明原文地址:https://tihaiku.com/zcyy/3974955.html
相关试题推荐
Whichofthefollowingcannotbethemedianoffivepositiveintegersa,b,c,d
Thefollowingdatasufficiencyproblemsconsistofaquestionandtwostatements
Thefollowingdatasufficiencyproblemsconsistofaquestionandtwostatements
Thefollowingdatasufficiencyproblemsconsistofaquestionandtwostatements
Thefollowingdatasufficiencyproblemsconsistofaquestionandtwostatements
Thefollowingdatasufficiencyproblemsconsistofaquestionandtwostatements
Thefollowingdatasufficiencyproblemsconsistofaquestionandtwostatements
Thefollowingdatasufficiencyproblemsconsistofaquestionandtwostatements
Thefollowingdatasufficiencyproblemsconsistofaquestionandtwostatements
Thefollowingdatasufficiencyproblemsconsistofaquestionandtwostatements
随机试题
Heistooweakto_______hisbusiness.A、dowithB、dowithoutC、doawaywithD、d
Aftertheheavyrain,abuilderwascalledtorepairtheroof,whichwas______.
InnovationsinMedievalEuropeanAgriculture1.Intheyear1,
TheLarsenBiceshelfcoveredmorethan3,000squarekilometersandwas(36
有关胃肠激素主要功能的叙述,正确的是()A.调节消化道平滑肌的运动 B.是
男,55岁,既往体健,近6个月来有进行性厌食,消瘦乏力,伴上腹部不适。近2个月来
每年夏季,下图示区域内自南向北年降水量由约200mm增至500mm左右,沙漠地区
腰椎间盘突出症最先出现的症状是 A.腰痛B.坐骨神经痛C.大小便障碍D.
根据个人所得税的规定,下列转让行为应被视为股权转让收入明显偏低的有( )。A.申
生产经营单位的主要负责人对本单位安全生产工作负有的职责包括()。A.应当对工程项
最新回复
(
0
)