Board logo

标题: 和jj答案不同的题目求证 [打印本页]

作者: sylvia    时间: 2002-12-10 20:19     标题: 和jj答案不同的题目求证

495.Y 是否是XYZ的MEDIAN A X》Y+Z B Y=Z [确认]B (*如何理解题意? Y是否median ,if y=z ,should we say y is the median or z is the median since they are the same number? X=1,y=1,z=2 can we say x is median , y is median too?) 489 V,R,T 都为整数,问v^2*R*t^(-1/4)>0? 1)R>V^2 2) R>t^(-1/4) [确认]D (*要考虑v=0的情况。E) 416.求1998和1999change of the percentage in the number 那到 (1)1998 改变了。。。percentage. (2) 1999 改变了。。。percentage. .[讨论] E 两个连续的年头,应该是C? 406 DS:一班学生,学AB的##人,学AC的##人,学BC的##人,求共有ABC多少? A: 学AB人中有9人学C; B: 学A为#,学B为#,学C为# [确认]C (*A) 375. 设XoY=(x-y)/(x+y),现5o4=yo3,求Y [确认]4/15 (*我算得15/4 361. 0.n68 中n=? (n为正整数) 1). n<5 2). 0.n68<1/n2 [确认]E (*B 吧?n只能取1,取2就错了 357.卖轿车97年比96年收入下降11%,卡车97年比96年增长7%,总收入增长1%,问96年轿车与卡车销售收入之比。 [确认]2:1 我做1:2 (*同意1:2) 352 DS题,说农场里有animals 60头,其中2/3either猪or牛,问猪(或者牛)的数目是多少? (1) the number of cow is more than twice as many as the number of pigs. (2)pigs的数more than 12 [确认]C 我选E (*我认为是C) 349 。1-99,inclusive,其product为(n+1)n的 multiple 是几分之几? [确认]2/3 (*这题目什么意思?谁的product ?) 333.绿灯:45秒,黄灯5秒,红灯:50秒.绿黄红依此闪烁.问3分钟内红灯能有多少秒. [确认]80 (*怎么算的呢?我算得100秒) [em13]
作者: tongxun    时间: 2002-12-10 21:11

495. Because y=x=1, the median could be y or x.

489. you are right. We do pay attention on the condition that v is equal to 0.

416. This question is incompleted. Even though it is completed, we must notice that there is a differentia between the number of people in 1993 and in 1994.

406. 1) if anbnc, the answer is A; if aubuc, the answer is C

375.15/4

361.if n=1, 0.n68>1/n2
作者: zeus99    时间: 2002-12-10 23:19

406,如求AUBUC,由于不知道N,应选E

333,绿黄红依此闪烁




欢迎光临 国际顶尖MBA申请交流平台--TOPWAY MBA (http://forum.topway.org/) Powered by Discuz! 7.2