348.
一样,请大家讨论吧.这到数学怎么和阅读有一拼.
From the beginning of last year, Price per share increased K percent. Earning per share increased M percent. Question: ask the ratio in percentage for price per share to earning per share in increase. In term of K, M.
[确认](K-M)/(100+M)。此题是一老JJ。
题目不太懂? 有无列式
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
359.problem solving有一道新题看不太懂,我背了下来,请大家补充,谢谢!
the prosibility of A increased is 54%, the prosibility of b increased is 68%, what's the "greatest prosibility of neither of the 2 event occur"?
a) 22%, b) 32% , c) 37%, d)46%, e)??
[思路]这是求两个事件都不发生的概率吧。
我选32,完全重合,取最大的补集,
最小的话,应该是22,大家呢?
352:
P FOR PIG, C FOR COW
P+C=60*2/3=40
(1)C>2P
(2)P>12
IF C=2P+1, THEN P=13, C=27
IF C=2P+4, THEN P=12 WILL NOT BE VALID. AS P>12
SO THE ANSWER IS (C).作者: sherrytang 时间: 2002-12-6 01:56
353:
C6^1+C6^1+C6^2=6+6+15=27
484:
Z=0.1A+0.01B+0.001C
(1)100Z, THE TENTH DIGIT IS A
(2)1000Z, THE UNIT DIGIT IS C
So, there is no clue to know B. The answer is (E)作者: David0822 时间: 2002-12-6 03:14
360.相片外面有1寸的边,总面积W,边增加到2寸,总面积W+52,问相片的周长?
[确认]40
列式?
---------------
[ab = W] & [(a+2) * (b+2) = W + 52]
2(a+b) = 48
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somebody tell me what the problem is, please.作者: gmat02 时间: 2002-12-6 21:24
equation is wrong, please refer to that from Tongxun.
tongxun and sherry, thank you very much.作者: David0822 时间: 2002-12-6 21:56
I see.
thank you.
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