#### 题目列表

In 2005, 80% of the Central City School Districts total expenditures came from local property taxes, and the rest came from the state government`s Aid to Schools Program. If the state had reduced its aid to the district by 50%, by what percentage would local property taxes have had to be increased in order for the district to maintain the same level of expenditures? The revenue from lottery ticket sales is divided between prize money and the various uses shown in the graph labeled "Proceeds." In 2009, what percent of the money spent on tickets was returned to the purchasers in the form of prize money? In how many years from 2001 through 2008, inclusive, did the sales of ABC Mega Stores exceed the average of the annual sales during that period? In which of the following pairs of years were the ratios of Republican receipts to Democratic receipts most nearly equal?

#### Quantity A

The number of primes that are divisible by 9

#### Quantity B

The number of primes that are divisible by 19

AC

#### Quantity B

BC a-b=5, b-c=5, c-3=5

a

18

#### Quantity A

The greatest prime factor of 490

#### Quantity B

The greatest prime factor of 500

The first term of a sequence is 1. Starting with the second term, each term is 1 less than 3 times the previous term.

#### Quantity A

The smallest number greater than 100 in the sequence

#### Quantity B

120

In the stair unit in the figure above, all the angles are right angles. The left side is 5'4", and the bottom is 9'2". Each vertical riser is 8". The top step is 10(1/4)", and each step below it is 1" more than the preceding step.

#### Quantity A

The perimeter, in inches of the figure above

#### Quantity B

300 $ab\neq0$

#### Quantity A

$(a+b)^{2}$

#### Quantity B

$(a-b)^{2}$

The radius of the large circle is R. The radius of the small circle is r. The areas of the shaded region and the white region are equal.

#### Quantity A

$\frac{R}{r}$

#### Quantity B

1.5 The area of a right triangle whose sides are 6, 8, and 10 is how many times the area of a right triangle whose sides are 3, 4, and 5?
If the average (arithmetic mean) of x, y, and z is 20, which of the following is the value of z in terms of x and y?
A and B are independent events, and the probability that both events occur is $\frac{1}{2}$. Which of the following could be the probability that event A occurs? Indicate all such probabilities.
If $m^2 = 17$, then what is the value of $(m+1)(m-1)$?
If a, b, x, and y are positive integers, and $13^a \times 13^b=(13^x)^y=13^{13}$, what is the average (arithmetic mean) of a, b, x, and y?