10/11/02
1. DS: K^4的个位数是? 1) K is not divisible by 5 2) K is divisible by 2
2. 某东东裂变。Triple in every 30min, what is the number of it after 4 hours divided by that in 2 hours?
/////what’s the meaning of “after 4 hours divided by that in 2 hours”???
3. A集合中的45个数都比B中的44个数字小问 A+B的median?1)A中的最大的数字是60 2) B 中最小的是60
//////is the answer “E”??? because we don’t know how the numbers are arranged
4. 3个泵灌一个水池分别需2,4,8个小时,如果3个泵同时工作(原先还以为是工程问题),再看问题:下面那个比例水池的水被灌完成的速度最快?(不就是比大小吗,折腾了半天,答案好象是1/7)
//// what’ s the meaning of this question??
5. 商店卖某东东,售价2240元的时候利润是40%,问利润50%时售价应是多少?(2400)
///// why my answer is 2688 ????
6. 两个人开车,相距多少miles(有具体数字),问B追上A需要多少时间?(A)
(1) B每小时比A快4miles
(2) B每小时170miles
////// Is A right??
7. DS 问正整数N=?
(1) N 除以3的6余数为1
(2) N除以3的余数为2作者: 范进 时间: 2002-10-14 18:08