作者murai111 (明镜止水)
看板GRE_Verbal
标题[计量] 三题数学...我问题真多
时间Fri Aug 15 02:39:21 2008
23. If the sum of digits of a two digit number xy is 6 more than
the difference between the digit at tenth place and unit digit then
find the value of y?
A.1
B. 2
C. 3
D. 4
E. Cannot be determined
韩网有人算c
26. The area of town A which lies in city B is 20% of the area
of city B not in town A
Col A: Ratio of area of A to that of B
Col B: 18/1
韩网有人写B
我不太懂这题 因为我怎麽看都觉得B面积大於A
以上两题我不太知道我想的题意是不是对的
25. Given that the lines k and m pass through point (1, 1).
If the slope of k is less than that of m & if k passes through (0, a)
and m passes through (0, b), then
Col A: a
Col B: b
我写A 但韩网下面有在讨论 我看不太懂
13. Given A= {Set of odd integers less than 100}
B= {Set of even integers less than 5}
C= {Set which include product of both sets A and B}
Col A: number of integers in set C
Col B: 100
这题我之前问过 但是似乎没人回答得很确定
有人说odd不包括负数 但英文维基百科有写负
有没有人可以告诉我这题到底确定答案多少阿
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◆ From: 59.112.12.198
1F：→ Alroy:23. x+y-(x-y)=6 2y=6 y=3221.169.198.150 08/15 02:45