#### Quantity A

$(-87)^{8}$

#### Quantity B

$(\frac{1}{87})^{-8}$

Which of the following could be the value of x to make sure that $x^{3}$-x is divisible by 10?

Indicate all such values.
The lengths of the two sides of the triangle are 1 and $\sqrt{2}$ respectively. What is the range of the length of the third side?
a=$(-\frac{1}{37})^{12}$, what is the value of $37^{-12}$?

#### Quantity A

$\frac{111}{1111}$

#### Quantity B

$\frac{1111}{11111}$

Three coins-two 10-cent coins and one 5-cent coin--are to be flipped simultaneously. For each of the three coins, the probability that the coin will land heads up is $\frac{1}{2}$. What is the probability that the total value of the coins that will land heads up is 15 cents?
Which of the following could be a factor of $\frac{9!}{(6!*3!)}$?

Indicate all such numbers.
What`s the units digit of the positive difference between $32^{19}$ and 32?
The speed of light is 3*$10^{8}$ meters per second, rounded to the nearest $10^{8}$ meters per second. A "light-hour" is the distance that light travels in an hour.

#### Quantity A

The number of kilometers in a light-hour

#### Quantity B

$10^{10}$

Of the following, which graph best represents a shaded region in which every point (x, y) satisties the inequality y ≤ |x|?
The mean and range of all the numbers in Set X is 200 and 100, respectively.

The mean and range of all the numbers in Set Y is 100 and 100, respectively.

#### Quantity A

The standard deviation of integers in set X

#### Quantity B

The standard deviation of integers in set Y

#### Quantity A

$\frac{(5!+6!)}{(6!+7!)}$

#### Quantity B

$\frac{1}{6}$

Three numbers are to be selected at random and without replacement from the five numbers 4, 5, 7, 8 and 11. What is the probability that the three numbers selected could be the lengths of the sides of a triangle?

x

#### Quantity B

112

$l_{1}$∥$l_{2}$

m

#### Quantity B

130

The remainder is 2 when y is divided by x.

The remainder is 4 when y+10 is divided by x.

Which of the following must be an integer?
Which of the following points lie(s) inside the region expressed by y≥-2x+1?

Indicate all such points?
From X to Z, A and B have different choices of routes. A goes directly from X to Z at an average speed of 20mile/h for 10 miles, while B starts first from X to Y at an average speed of 20mile/h for 7miles, and then from Y to Z at an average speed of 30mile/h for 4miles. What is the minimum minutes from X to Z between A and B?
In a store, $\frac{2}{3}$ of the employers take care of the customers and $\frac{1}{5}$ of the employers wash dishes. What is the proportion of employers who do not take care of the customers or wash dishes?
Which of the following is equal to $x^{4}$+2$x^{2}y^{2}$+9$y^{4}$?

25000 +道题目

151本备考书籍