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Q: 越做越觉得换裤裤了,所以放慢速度,慢慢做。
顺序有点乱,大家表介意
1.用韦恩图解题的比较多
2.2个立方体,每面都是一个数字,1-6,同时抛,问最上方的那一面数字之和是5或者9的概率多少? 5=2+3=1+4,so the probability could be 1/6 * 1/6 *2*2=1/9, 同理 9=3,6=4,5,p=1/9,so the final answer shall be 2/9.
3.to make a food, one may use chocolate and peanut, the cost of 2 pounds chocolate and 3 pounds peanut to make such a food is 3.8 per pound, if the cost of chocolate is 2 more than (or less than) that of peanut, how much does peanut cost?
4.the volumn of two sphere has a ratio of 64, then what is the ratio of its surface area?
5. in a room, the source of light is in the central of ceiling, the room has a width of 16, length of 12, a height of 10, then what is the greatest distance that a light beam could reach within the house? cube ,calculate the diagonal distance,对角线
6. in a survey of the number of goose, scientists harvest A (数字忘记了)个 eggs and select 2 eggs out of 90% nests have more than 5 eggs, and there are B nests that have 4 eggs. There are no other nests. So what is the total number of nests surveyed ?
7. X is a positive integer and the sum of all the units digit is 170 , Y is a integer, and X=10^20-Y, then what might be the value of Y?
8.概率题目较少,整数性质题目也不多,很简单的计算题多
9.也许是因为刚刚换裤裤,所以GMAC还没有把难题跑出来吧,所以大家对刚刚换KK也不要太紧张,有好处滴其实。
10.按照前面10题慢慢做的原则,对整体发挥有帮助的
11.第一题容易卡壳,尤其是读题目意思方面,我今天就是这样,描述比较多的,但是分解开来,慢慢读几遍,哦,意思出来了。不要着急。花时间是肯定要的,但要坚信,后面补得回来。今天做Q,就剩了2分钟,呵呵。一方面是对裤裤换了有点波动,另一方面,不敢马虎,必须放慢速度。
12.油笔和草稿纸用起来很小心,跟平常用纸和笔感觉不太一样,不敢大大地计算,浪费纸张,但是后面发现还剩了一些草稿纸,呵呵。 |
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