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).说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
我怎么觉得是A???
DS 两个数集, 一个含P 个10, 一个含Q 个20. 问总共的算数平均数?
(1) P+Q=100 (2) P > 50 确定 C
我怎么觉得是E???
小于1000的正整数中 能被11,19 或两者整除的偶数的个数?
【确定】69
R:被11整除的个数+被19整除的个数-被11*19整除的个数 偶数是无
关信息
为什么偶数是无关信息??
one store charge 10% sales tax for cloth and 5% sales tax
for jourey, Alice各买了一样,use totally $109, the price of
the bracelet including tax is $20, what is the price of the
clothing including tax?
【确定】 $80
R: (trick: pay attention to "tax" and "sales tax" 税包含在
商品中,销售税在商品外 分别付了20元和1元的销售税 80元和8元
销售税)
我还是没懂,bracelet从哪里来的?到底怎么算的?
买什么东东,A 0.29一个,B 0.15一个,问买了多少A?
1)总共花了4。4
2)A和B 买的数量一样
【确定】 D
R:4.4只能唯一
我怎么觉得2)不行??
K is a three digit integer, whose unit digit is not zero.
What is the tens digit of K.
(1) The tens digit of K + 9 is 3
(2) The tens digit of K + 4 is 2
【讨论】E
N:请考虑K 为负数的情况
我觉得是c,因为是不用考虑负数情况的,因为在负数情况下不存在
一个满足两个条件的k.
DS:45% the apartments with <=3 people living in each one.
What’s the median?
(1)80% of the apartments have <=5
(2)35% of the apartments have >=5
【机委】B
怎么算??
一个四边形,四角x, y, z, m, 已知x+y=160, 问x是否等于z
1) x+m=200
2) y+z=160
【机委】D
怎么算??
98年产量是X,2000年是Y, 问产量下降是否超过10%?
(1) X/Y>5/4
(2)Y/X>3/4 仅b条件与以前稍有变化,以前JJ是Y/X>1/4
【确认】A
怎么算??
M 20% greater than X.X20%greater than Y,Y 20% greater than Z.Z 20% less than X. what percent of than Z is M? 15.2% 16% 23%
【确定】15.2%。
怎么算??作者: tongxun 时间: 2002-11-13 18:53
z_weining:
1、你看错题目了:
1)若题目是more than twice as many ,则答案是C
2)若题目是twice as many , 则答案是A