#### 题目列表

For which of the following values of x is the units digit of the product $(2)(3^{x})$ equal to 4?
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 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

#### Quantity B

25.9

Point O is the center of a circle with circumference 12.
Point P is another point inside the circle.

#### Quantity A

The greatest distance from P to a point on the circle plus the least distance from P to a point on the circle

4

xy > 0

#### Quantity A

$x^{4}y^{3}$

0

If 00

A(a,b)+A(b,c)

#### Quantity B

A(a,c) In the xy-plane, C and D are circles centered at the origin with radii $\sqrt{17}$ and $\sqrt{5}$, respectively.

#### Quantity A

The number of points (a, b) on circle C where both a and b are integers

#### Quantity B

The number of points (a, b) on circle D where both a and b are integers

In a distribution of the values of the variable x, the 50th percentile is 48.5 and the 60th percentile is 56.5.

#### Quantity A

The 40th percentile of the distribution of the values of x

40.5

25000 +道题目

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