首页
登录
职称英语
[img]2022m10x/ct_ve01204002j_0066_221018[/img]Each entry in the multiplication
[img]2022m10x/ct_ve01204002j_0066_221018[/img]Each entry in the multiplication
游客
2025-02-27
9
管理
问题
Each entry in the multiplication table above is an integer that is either positive, negative, or zero. What is the value of a ?
(1) h≠0
(2) c = f
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
C
解析
(1) If a, b, c equal 1,2,3 in this order, then each entry will be an integer, h ≠ 0, and a=1. However, if a, b, c equal 2,3,4 in this order, then each entry will be an integer, h ≠ 0, and a = 2. Hence, the value of a cannot be determined; NOT sufficient.
(2) The assumption c =f is equivalent to ac = c, or (a -1)c = 0. Hence, c =f is equivalent to a = 1 or c = 0. If a, b, c equal 1,2,3 in this order, then each entry will be an integer, c =f, and a=1. However, if a, b, c equal -2, -1,0 in this order, then each entry will be an integer, c =f, and a = -2. Hence, the value of a cannot be determined; NOT sufficient.
Given (1) and (2), then from (1) we have bc = h≠0, and hence b ≠ 0 and c ≠ 0. From (2) we have a = 1 or c = 0, but since c ≠ 0, it follows that a = 1. Hence, the value of a can be determined.
The correct answer is C;
both statements together are sufficient.
转载请注明原文地址:https://tihaiku.com/zcyy/3974661.html
相关试题推荐
[img]2022m10x/ct_ve01204002j_0066_221018[/img]Eachentryinthemultiplication
[img]2022m10x/ct_ve01204002j_0040_221018[/img]AfactoryassemblesProductXfro
[img]2022m10x/ct_ve01204002j_0037_221018[/img]Thetableaboveshowsthepercent
[img]2022m10x/ct_ve01204002j_0034_221018[/img]Inthefigureabove,PQisadiame
Foreachpositiveintegerk,letak=[img]2022m10x/ct_ve01204002j_0043_221018[/img
Ofthefollowing,whichisgreatest?[img]2022m10x/ct_ve01204002j_0042_221018[/i
[img]2022m10x/ct_ve01204002j_0041_221018[/img]Thetableaboveshowsthenumber
Ifa(n)=[img]2022m10x/ct_ve01203002j_egreqjs_0175_221020[/img],a(1)=8,whichoft
3×104isgreaterthan4×103bywhatpercent?A、[img]2022m10x/ct_ve01203002j_egreq
n是奇数吗?(1)n4-2是偶数(2)[img]2022m10x/ct_ve01204002j_egmatqchoose_0009_221020[/img]
随机试题
关于臭氧氧化污染物的描述,下述说法正确的是哪几个?( )A.臭氧与氰和亚硝酸盐
A.发热 B.腹肌强直呈板状 C.突发上腹剧烈疼痛,迅速波及全腹 D.恶心
根据《水利工程建设项目招标投标管理规定》(水利部令第14号),水利工程建设项目施
在一定空气状态下,当物料表面产生的水蒸气压与空气中水蒸气分压相等时,物料中所含水
与琼脂凝胶电泳分离的β-脂蛋白相对应的脂蛋白是( )。A.CM B.VLDL
患者,男性,25岁,在塌方事故中骨盆多处骨折,胫腓骨上1/3骨折,急诊入院。此患
顺控操作(程序化操作)是变电站倒闸操作的一种操作模式,可实现操作项目软件预制、操
马某强奸田某一案中,马某被公安机关依法逮捕,经检察院审查起诉后移送至法院审判。田
(2018年真题)下列合同,应按照“技术合同”缴纳印花税的是()。A.设备
2020年3月1日,甲公司通过证券交易所的证券交易,持有A上市公司已发行的有表决
最新回复
(
0
)