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The area of the shaded region inside rectangle RSTW is 28.

Quantity A

The sum of the areas of the unshaded regions inside rectangle RSTW

Quantity B

42


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List K consists of 10 numbers whose standard deviation is 7.

List M is formed by adding 3 to each number in list K.

Quantity A

The standard deviation of the numbers in list M

Quantity B

7
At a community college, 36 students are enrolled in a psychology class and 28 students are enrolled in a statistics class. Of the students enrolled in the psychology class, 17 are also enrolled in the statistics class.

Quantity A

The number of students at the college who are enrolled in only one of the two classes

Quantity B

30
x < 8

Quantity A

|x|

Quantity B

9


Quantity A

x

Quantity B

y


 GRE、gre题库、gre模考、gre考满分
0 < p < 1

n is a positive integer.

Quantity A

$$p^{n}$$

Quantity B

$$p^{-n}$$


According to the graph, the kiosks of which of the following two types combined account for $$\frac{6}{25}$$ of all the kiosks? GRE、gre题库、gre模考、gre考满分
0.4, 0.8, 1.2, 2.0, y

If the average (arithmetic mean) of the 5 numbers in the list above is 1.0, what is the value of y ?
In a certain sequence of numbers, each term after the first term is found by multiplying the preceding term by 3 and then subtracting 2 from the product. If the third term of the sequence is 55, what is the first term of the sequence?
Points P, Q, and R lie on a line, and point Q is between point P and point R. The length of line segment PQ is 5. Which of the following could be the length of line segment PR ?

Indicate all such lengths.
If c, d, and e are integers greater than 1 and cde=66, what is the value of c+d+e ?
An initial amount of 600 grams of a saltwater solution that was 5 percent salt, by mass, was reduced to 300 grams of solution by evaporating some of the water. If the amount of salt remained the same, then the resulting solution was what percent salt?
Approximately how many people were age 24 years or younger?
The median age of the population is in which of the four age-groups shown?
Which of the following information, if any, together with the information given, is sufficient to determine the average (arithmetic mean) age for the population?
John and Paul begin work at 8:00 in the morning and finish at 4:30 in the afternoon. John begins his first break of the day at 8:45 and his second break at 9:30, and he continues to take a break every 45 minutes throughout the day. Paul begins his first break at 9:00 and his second break at 10:00, and he continues to take a break every 60 minutes throughout the day. At which of the following times do John and Paul begin a break at the same time?

Indicate all such times.
In the xy-plane, a quadrilateral has vertices at (-9,-2), (-1,-2) ,(-1,-4) , and (-9,-4). What is the perimeter of the quadrilateral?
The total charge for a 4-week dance class is $55.00. The class has 3 sessions per week, and each session lasts 45 minutes. Approximately what is the charge per hour for the class?
If$$4^{x}=256$$ , what is the value of $$2^{2x-1}$$ ?

$$2^{2x-1}$$ =_____

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