#### 题目列表

For each of the 5 months July through November, the stock price per share of Brand D coffee decreased from the price for the preceding month. Which of the following is closest to the average (arithmetic mean) of the 5 decreases in price per share?
From the graph, Joe read the stock prices for three consecutive months for Brand D coffee. Which of the following is closest to the maximum possible range of the three stock prices that Joe read?
If $\frac{r}{s}=\frac{1}{2}$ and $\frac{r}{p}=\frac{2}{3}$, then $\frac{r}{s+p}$=
When positive integer m is divided by 6, the remainder is 4. When positive integer p is divided by 6, the remainder is 5. What is the remainder when the product mp is divided by 6?

Construction workers measured the distance from two poles to a reference point A as 13 feet and 10 feet, as shown in the figure above. Which of the following values could be the distance, if feet, between the two poles?

Indicate all such values.
x=4+c and y=4x + c

The average (arithmetic mean) of x and y is 17.

c

#### Quantity B

3

In a quality control study, 200 boxes of brackets were examined; each box contained 50 brackets. For each box, the ratio, f, of the number of defective brackets in the box to the total number of brackets in the box was recorded. The number of defectives per box varied from 1 to 12, inclusive.

#### Quantity A

The sum of the 200 values of f

#### Quantity B

The sum of the squares of the 200 values of f

The solid shown above is composed of four identical solid cubes, each with sides of length 2. What is the surface area of the solid?

In the figure above, $\frac{x}{y}=\frac{2}{3}$. What is the least number of degrees through which segment PR would have to be rotated in the direction indicated so that $\frac{x}{y}=\frac{3}{2}$
A ball is dropped from a height of 3 meters and bounces repeatedly. After each bounce, it reaches a height that is 65 percent of its previous height. If the height of the ball after the n th bounce is less than 20 centimeters, which of the following could be the value of n?

Indicate all such values.
The two-digit positive integer XY is a multiple of 5, where X and Y are the tens digit and the units digit, respectively. Which of the following statements individually provide(s) sufficient additional information to determine the value of the integer XY?

Indicate all such statements.
A student has a box containing only two kinds of bills: 6 Canadian dollar bills and y Australian dollar bills. If more than $\frac{3}{8}$ of the bills in the box are Australian dollar bills, what is the least number of bills that the student could have in the box?
The median of the scores on exam 1 was how much higher or lower than the median of the scores on exam 2?
One of the 15 students had a total score of 182 on the two exams. What is the weighted mean of that student's two scores if the score on exam 1 has a weight of 40 percent and the score on exam 2 has a weight of 60 percent?
A pair of students is to be chosen to write a certain report, and each of the chosen students must have a total score of 170 or higher on the two exams. How many different pairs of students meet this requirement?

The table above shows the predicted high temperatures, in degrees Fahrenheit, for two weeks in City X. Based on the information given, which of the following changes to the temperatures would cause a change in the median of the temperatures for the two-week period?
Row A: 15, 16, 17, 18, 19

Row B: 8, 9, 10, 11, 12, 13, 14

One number is to be selected from row A and another from row B. The sum of the two numbers will have how many possible values?
xy > 0 and xz < 0

#### Quantity A

$x^{2}$

#### Quantity B

yz

$72=2^{x}(3^{y})$

x and y are positive integers.

x

#### Quantity B

y

In the rectangular coordinate system, the "D-length" between points ($x_{1}, y_{1}$) and ($x_{2}, y_{2}$) is defined as the greater of the two quantities |$x_{1}-x_{2}$| and |$y_{1}-y_{2}$|. Points R, S, and T have coordinates (-3, 1), (3, 5), and (4, 1), respectively.

#### Quantity A

The D-length between points R and S

#### Quantity B

The D-length between points R and T

1 2 ... 4 5 6 7 8 9 10 ... 18 19

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