gre考试数学难题一直都是考生在gre考试中需要突破的关卡,那么为何gre考试数学难题会难倒很多考生呢?其实,如果gre考生平时多注意一些gre考试数学难题的积累,相信考试的时候也就不会束手无策了。
1. n 个数从小到大排列,求/4,设商为i,余数为j ,则可求得1st Quartile 为:/4+j/4
2. 4 个,2 个的排列方式 15
3 .5 双袜子,同时去2 只,刚好配对的概率。1/9
4. 40 人说French,60 人说Russian,80 人说Italy,说两种语言的有50 人,说三种语言的有 10 人.
共有125 人,问不说这些语言的有几人. Key:125-=15
5 .等腰直角三角形边长2 加2 倍根号2,求面积。
6. 某种溶液浓度为125gram per liter, 转换成 ounce per gallon, 求表达式. 已知 1ounce=28.xxx gram and 1 gallon=3.875 liter
7. x,y,z 均方差为d, 求x+10,y+10,z+10 的均方差
8. 1 的概率是0.8,2 的概率是0,6,问是1 或是2 或是both 的概率,1-0.60.8=0.92.
9. 还有一组测量数据中,12.1 比mean 低1.5 个标准差,17.5 比mean 高3.0 个标准方差.问mean是多少.13.9
10. 图表题,1992 年总和是50,96 年是60,每年至少增长1,问最大的年增长:7.0
以上就是gre考试数学难题部分内容,近期还会给大家分享一些gre考试数学难题。
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