作者tecoteco (teco)
看板GMAT
标题[计量] 几题问题请教
时间Tue Jul 29 10:37:08 2008
1. 5x = 2y and xy ≠ 0, then is what percent of y ?
Ans: 40% (不会做,觉得题目错了或是条件给太少)
2. 150, 200, 250, n
which of the following could be the median of the 4 integers listed above?
I. 175
II. 215
III. 235
Ans: II and III only (不懂,个人觉得答案应该是 I and II only)
3. If a code word is defined to be a sequence of different letters chosen
from the 10 letters A, B, C, D, E, F, G, H, I, and J, what is the ratio
of the number of 5-letter code word to the number of 4-letter code words?
Ans: 6 to 1 (完全看不懂题目)
4. Which of the following is equal to (2k)(5k-1)?
A. 2(10k-1) B. 5(10k-1) C. 10k D. 2(10k) E. 102k-1
Ans: A (明明题目有k*k, 为什麽答案都只有一个k?)
5. From a group of 3 boys and 3 girls, 4 children are to be randomly
selected. What is the probability that equal numbers of boys and girls
will be selected ?
Ans: 4/9 (个人觉得答案应该是3/5)
6. Which of the following fractions has a equivalent that is a terminating
decimal ?
A. 10/189 B. 15/196 C. 16/225 D. 39/128
Ans: D (看不懂题目)
以上六题 恳请解答!!
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1F：推 passgirl:第2题我问过了喔，你可以看前几天的回文! 07/29 12:03
2F：推 burgessx:请问楼上 可以问依下再哪一篇嬷? 我找不到第二题的答案.. 07/29 17:24
3F：推 flac:第二题答案是怎来的阿? 07/29 18:03
4F：推 flac:你的题目是哪来的呢? 怎好像部分答案与题目都不是很准确 07/29 18:07
5F：推 flac:第二题答案应该是 I与II 因为中位数必定落在175~225之间 07/29 19:56
6F：→ tecoteco:看来有的应该是题目本身的问题... 但还是谢谢大家!! 07/29 20:43