加拿大研究生留学如何搞定这些很绕的GRE数学题干
最近总能听到有同学说,我就是数学专业的,可是我的数学并没有满分,我给数学专业丢脸了”。是的,这个事情很可能就发生在你的身边。不管你是什么专业,其实从数学知识点的层面来看,只要你上完了我国的九年制义务教育,其实知识点啥的在消化了之后都不成问题。加拿大GRE
所以专业其实不重要,文科理科更不重要,那为什么你考GRE数学没有满分呢?因为有别的“事情”在等着你哦!看看下面的题干都读得懂吗?
谜题1.到底谁是谁的百分之多少?
先来看题,也可以自己选选答案哦!
Of the students in a school,20 percent are in the science club and 30 percent are in the band.If 25 percent of the students in the school are in the band but are not in the science club,what percent of the students who are in the science club are not in the band?
A.15%
B.20%
C.25%
D.60%
E.75%
这个题但凡是上过我课的同学一眼就能看出来坑在哪里,因为这个题的正确率实在太低了,属于上课要重点敲黑板的问题。而这个坑,不在于不会做,就在于题干中的问题能不能读明白,。
What percent of A is B这个表述的意思是B是A的百分之多少,需要用B除以A。
而该题目中的A是the students who are in the science club中的人,也就是20%的人,整个的问题在于求这20%的人中有百分之多少不在band中,根据Venn Diagram关系,只在science不在band的人占了15%,那么我们就需要用15%÷20%=3/4,也就是75%,所以E才是答案。学在加拿大
你选的是A还是E呢?之后再看到百分数考点中的这个表述,自己要注意哦!
谜题2.究竟谁是谁的2倍?
还是先来上个题吧!
A certain group of workers contains twice as many men as women.The average(arithmetic mean)weight of the men in the group is 172 pounds,and the average weight of all the workers in the group is 154 pounds.
Quantity A:The average weight of the women in the group
Quantity B:120 pounds
A.Quantity A is greater.
B.Quantity B is greater.
C.The two quantities are equal.
D.The relationship cannot be determined from the information given.
这是个很简单的求平均数的问题,不过第一句话到底怎么理解?men是women的2倍?还是women是men的2倍?
原来英语老师教的格式是A is twice as many as B,这叫做A是B的2倍,但是对于twice as many men as women的表述,只需要记住前面的是后面的2倍就好了,也就是men是women的2倍,女性设为x人,平均数为m,则男性就是2x人。
然后就可以列式子154=(172*2x+xm)/3x,x约分掉之后可以求得m=118,显而易见120更大一些,选择B,以后碰到倍数问题要能搞清楚哦!
最后的最后看看这个考场常客答案是哪个?(11:30解析和答案会公布在评论区,记得来看。偷偷告诉你这个题最好背答案哦)GRE数学
In a certain building in a business district,a newspaper service delivers 104 papers every day to its customers.Twice as many customers have 3 papers delivered each day as have one paper delivered,and three times as many customers have 2 papers delivered each day as have one paper delivered.If no customer has more than 3 papers delivered,then the number of customers who have 2 papers delivered each day is(高频考题)
A.16
B.18
C.20
D.22
E.24