题目列表

题目内容
For a≠b, a▼b=$$\frac{a+b}{a-b}$$

w>0>z

Quantity A

w▼z

Quantity B

z▼w


△ABC

Quantity A

AB+BC

Quantity B

AC


A fair coin is tossed three times.

Quantity A

Probability of getting exactly two heads

Quantity B

Probability of getting exactly one tail


ab=18, a+b=9

Quantity A

a

Quantity B

2b


A 6-by-8 rectangle is inscribed in a circle.

Quantity A

Circumference of the circle

Quantity B

12π


x, y, and z are consecutive integers. x<y<z

Quantity A

y

Quantity B

The average (arithmetic mean) of x and z


Quantity A

$$The sum of the roots of x^{2}-9x+20=0$$

Quantity B

$$x^{2}+6x+8=0$$


How many integers from 1 to 40 inclusive are multiples of 4 or 5?

_____integers
The average (arithmetic mean) of three positive numbers is 10. One of the numbers is 12. The product of the other two numbers is 32. What is the greatest of the three numbers?
Which of the following is a prime factor of 1,554? Indicate all possible correct answers.
Aperson walking 3 miles per hour goes from point A to point B in 10 minutes. How many miles is it from point A to point B?
Marie has twice as many brothers as sisters. Her brother Max has the same number of brothers as sisters. How many brothers and sisters are there?
Which of the following could be the sum of 1 + 2 + 3 + ... + n, where n≤10? Indicate all possible correct answers.
There are 65 calories in 4 ounces of a certain type of juice. How many calories are in 28 ounces of the juice?
The perimeter of a rectangle is 80. The difference between the length and width of the rectangle is 20. What is the area of the rectangle?

_____square units
Arectangular solid with length 8, width 4, and height 2 has the same volume as a cube. What is the length of an edge of the cube?

_____
y>0

Quantity A

$$1+\frac{y}{1+y}$$

Quantity B

$$1+\frac{1}{1+y}$$


n is an integer, and n>2

Quantity A

$$3^{n}$$

Quantity B

$$n^{3}$$


Quantity A

The slope of the line with the equation 3x+4y=7

Quantity B

The slope of the line with the equation 3(x-2)+y=7-6(y+ 4)


Quantity A

The percent decrease from 20 to 16

Quantity B

The percent decrease from 24 to 20


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