#### 题目列表

In the xy-plane, the points P, Q, and S have coordinates (14, 10), (1, 0), and (6, 0), respectively. What is the area of triangular region PQS ?
A farmily paid 12 percent of its annual after-tax income on food last year. This amount was equal to 10 percent of its annual before-tax income last year. Which of the following is closest to the percent of the family's annual before-tax income that was paid for taxes last year?
If 2,4, 6, and 9 are the digits of two 2-digit integers, what is the least possible positive difference between the integers?
For which of the following values of x is the units digit of the product $(2)(3^{x})$ equal to 4?
How many 6-digit integers greater than 400,000 can be formed such that each of the digits 2, 3, 4, 5, 6, and 7 is used once in each 6-digit integer?
If $\frac{3x}{2}=\frac{5}{7y}$ and $\frac{3y}{5}=\frac{a}{x}$,what is the value of a ?
Of the total number of students enrolled at University U in the fallof 2008, $\frac{3}{8}$ were sophomores and $\frac{1}{50}$ were biology majors. Which of the following could be the total number of students enrolled at University U in the fall of 2008 ?
Indicate all such numbers.

The figure above represents a semicircular garden that is enclosed by 20 feet of fencing and a straight garden wall. What is the area, in square feet, of the garden?
The average (arithmetic mean)of x and z is greater than y, and x < y < z.

#### Quantity A

The average of x, y, and z

#### Quantity B

The median of x, y, and z

#### Quantity A

The least integer x that satisfies the inequality $x^{3}$ > - 30

#### Quantity B

-3

The dotted line segments separate the rectangular region into six identical smaller rectangular regions.

#### Quantity A

The area of triangular region WXV

#### Quantity B

The area of triangular region XYV

a≠0

a+1

#### Quantity B

(1/a)-1

Square FGHJ has sides of length x. Region FOJ is a sector of the circle with center F.

#### Quantity A

The area of the shaded region

#### Quantity B

$\frac{x^{2}}{4}$

Atotal of 1 ,500 boxes are stored in four warehouses. The number of boxes stored in the individual warehouses are x, y, z, and w, respectively, where w= 2x and z= 2y.

x+y

#### Quantity B

500

In the xy -plane, line segment RS is one of the sides of square RSTU (not shown).

#### Quantity A

The area of square RSTU

#### Quantity B

13

n is a positive integer.

#### Quantity A

The remainder when $3^{4n}$ is divided by 10

#### Quantity B

1

In the xy-plane, a line with equation y = mc + b,where m and b are constants and mb≠0, has a y-intercept that is twice the x-intercept.

m

#### Quantity B

-2

n is a positive integer.

#### Quantity A

$\frac{1}{3^{n}}$

#### Quantity B

$3(\frac{1}{4^{n}})$

PS

#### Quantity B

RS

In a certain club, the average (arithmetic mean) age ofthe 35 males is 24.2 years and the average age of the 25 females is 27.6 years.

#### Quantity A

The average age of all of the people in the club

25.9

25000 +道题目

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