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8月26日GRE最新数学预测机经

  • 时间:2016-08-26

  • 来源:互联网

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GRE考试不知大家准备的如何,今天留学监理网的老师先给大家来一份8月26日GRE最新数学机经,同学们可以参考借鉴。


如果你读不懂题,很可能是词汇不好,你需要GRE数学-常用词汇和公式


GRE-math.jpg

1. Two librarians, Robert and Patricia, cataloged a combined total of 180 new books, each of which was cataloged by only one of the two librarians. Although they spent the same amount of time cataloging their books, Robert spent an average of 15 minutes per book whereas Patricia spent an average of 12 minutes per book.

Quantity A:The number of books cataloged by Robert

Quantity B:60

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.

参考答案:A

假定Robert登记了x本书,Patricia登记了y本书,那么可以得到两个等式x+y=180, 15x=12y。根据等式计算即可。

 

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2. One of the solutions of the equation x^2+bx+c = 0 is -3.

Quantity A: 3b

Quantity B: c+9

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.

参考答案:C

将-3代入等式得到:9-3b+c=0,故3b=c+9

 

3. For any x , (x+1)^3=x^3+3x^2+3x+1

Quantity A: (y-1)^3+3(y-1)^2+3(y-1)+1

Quantity B: y^3

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

参考答案:C

假设x=y-1, 那么y=x+1, 代入得出结果相同。

 

4. x < y < 0

Quantity A: xy

Quantity B: y-x

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

参考答案:D

 

5. Parallelogram ABCD has adjacent sides of lengths 10 and 16.

Quantity A: The area of region enclosed by ABCD

Quantity B: 155

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

参考答案:D

平行四边形为长方形时A大,但为其它形状时可能B更大,因此无法确定。

以上就是“8月26日GRE最新数学机经”的详细内容,最后,预祝大家都取得满意的成绩!



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