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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.
$$\frac{a}{c}$$=0.0075 and $$\frac{b}{c}$$=0.09,where a,b and c are positive integers. What is the least possible value of c?
A hexagon is inscribed in a circle with diameter $$d$$. Each of the six sides of the hexagon have the same length, and each of the six angles of the hexagon have the same measure. What is the perimeter of the hexagon in terms of $$d$$?
In pentagon ABCDE, points M, N, P ,Q, and R are the midpoints of sides AB, BC, CD, DE, and EA, respectively.

Quantity A

The perimeter of pentagon ABCDE

Quantity B

The perimeter of pentagon MNPOR


Each person in a group of nine people was asked how many movies the person saw last month. The numbers of movies seen last month by five people in the group are 1, 1, 0, 2 and 2, respectively. If the median of the numbers of movies seen last month by the other four people in the group is 3, what is greatest possible value of the median of the numbers of movies seen last month by all the people in the group?
In the xy-plane above, both the $$x$$-intercept and the $$y$$-intercept of lines l and m are integers.



The coordinates $$(x, y)$$ of each point in the shaded region satisfy which two of the following inequalities?

Indicate BOTH of the inequalities.

There are a square and an isosceles right triangle in the figure above, and the whole area is 5/2. What is the value of x? Give your answer to the nearest 0.01.

The figure above represents the surface of a wall with an irregular shape, where all measurements are in meters and point P is 10 meters from the bottom edge and 10 meters from the left edge. The surface is to be painted, and one bucket of paint will cover 170 square meters of the surface. If the bucket of paint will cover the part of the surface from the left edge to a vertical line that is x meters from the left edge, which of the following is true?
n is an integer and 5n−1 is a positive even integer

Quantity A

$$(-1)^{n+1}$$

Quantity B

1


A set of k consecutive integers, including 2. The sum of the integers in the set is -11.

Quantity A

k

Quantity B

10


n is a positive integer, and $$n^{2}$$ is divisible by 7.

Quantity A

The remainder when n is divided by 7

Quantity B

1


The operation ▼ is defined by $$ n^{▼}=(n-1)^{2} $$ for all numbers n.

Quantity A

$$ \frac{(a+1)^{▼}}{a^{2}}$$

Quantity B

1


For all numbers x and y, the operation ▼ is defined by x ▼ y=x-2y.

Quantity A

1▼(2▼3)

Quantity B

(1▼2) ▼3


In a list of 5 different numbers the average (arithmetic mean) of the 3 greatest numbers is 72 more than the average of the 3 least nunbers. The average of the 2 greatest numbers is how much more than the average of the 2 least numbers?

Quantity A

The standard deviation of all the even integers from 8 to 44, inclusive

Quantity B

The standard deviation of all the odd integers from 59 to 95, inclusive


A computer identification code on a certain machine consists of 2 letters from an alphabet of 26 letters, followed by 2 digits from the digits 0 to 9. The two digits must be different. How many identification codes are possible?
If one number is chosen at random from the first 1,000 positive integers, what is the probability that the number chosen has at least one digit with the number 6?
Give your answer as a fraction.
The probability that a person will succeed at a particular task is p.

Quantity A

p(1-p)

Quantity B

0.4


x and y are integers, 0 < x < y, and $$x^{2}+y^{2} $$ is even. Which of the following integers must be even?

Indicate all that are true.
If both n and $$\frac{72}{n}$$ are positive integers, then how many values could n have?

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