不难，只相当于中学数学的难度，包含了一些数论。但是也有难点。我们为大家整理了数学考试中最易出错的新GRE数学难题，大家可以看看能不能对你的GRE内容：gre数学答案之关于最易出错的新GRE数学难题
这些都是GRE数学考试中最易出错的新GRE数学难题，大家可以看看能不能对你的GRE考试有所帮助：
1.Each employee of a certain company is in either Department X or Department Y, and there are more than twice as many employees in Department X as in Department Y. The average (arithmetic mean)salary is $25,000 for the employees in Department X and is$35,000 for the employees in Department Y.Which of the following amounts could be the average salary for all of the employees in the company? Indicate all such amounts.
A $26,000
B $28,000
C $29,000
D $30,000
E $31,000
F $32,000
G $34,000
本题我们要注意到题目中的more than twice的字眼，我们当做twice算的时候，结果是(25000*2+35000)/3约等于28333，因为有more than，所以选的答案要么是比前面这个数大，要么小，又由于more的是X部门的，那么肯定会将平均工资给拉低了，因此，选比前面那个数小的答案，AB都可以了。。
2.Working alone at its constant rate, machine A produces k car parts in 10 minutes.Working alone at its constant rate, machine B produces k car parts in 15 minutes. How manyminutes does it take machines A and B, working simultaneously at their respective constantrates, to produce k car parts? ____________minutes
这类题目小学时候经常遇到，相信很多人都是这种感受哈
1/(1/10+1/15)=6min
1)、If the dollar amount of sales at Store P was $800,000 for 2006, what was
the dollar amount of sales at that store for 2008 ?
A $727,200
B $792,000
C $800,000
D $880,000
E $968,000
直接算，800000*(1+10%)*(1-10%)=792000，即B
2)At Store T, the dollar amount of sales for 2007 was what percent of the
dollar amount of sales for 2008 ?
Give your answer to the nearest 0.1 percent.
___________%
直接算，1/(1-8%)=108.7%(约等于)
3)Which of the following statements must be true?
Indicate all such statements.
A For 2008 the dollar amount of sales at Store R was greater than that at
each of the other four stores.
B The dollar amount of sales at Store S for 2008 was 22 percent less
than that for 2006.
C The dollar amount of sales at Store R for 2008 was more than 17
percent greater than that for 2006.
本题A选项一看到就可以排除了，涉及到两个店的绝对量的比较，这个不确定，没有告诉绝对值。B选项是把两个增长的比例简单地算术相加。肯定错了。所以C肯定是对的了。。算一下也是的确是对的。。
3.A certain store sells two types of pens: one type for $2 per pen and the
other type for $3 per pen. If a customer can spend up to $25 to buy pens at
the store and there is no sales tax, what is the greatest number of pens the
customer can buy?
A 9
B 10
C 11
D 12
E 20
这个题首先就可以想到单价越便宜的我就能买的越多，因为它没有说两种笔一定要都买。
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