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PREP07 Test 1 If x is a positive number less than 10, is z greater than the average (arithmetic mean) of x and 10 ? (1) On the number line, z is closer to 10 than it is to x. (2) z = 5x
Manhattan Scott takes a trip and drives 6 hours from Town X to Town Z at a rate of 50 miles per hour. On his way back, Scott drives 75 miles per hour and stops in Town Y which is midway between Town X and Town Z. How many hours does it take Scott to drive from Town Z to Town Y?
OG12 (n-x)+(n-y)+(n-z)+(n-k)What is the value of the expression above?(1)The average (arithmetic mean) of x, y, z, and k is n.(2)x, y, z, and k are consecutive integers.
OG12 OG15 OG16 OG17 OG18 OG19 OG20 OG2022 What is the median number of employees assigned per project for the projects at Company Z?(1)25 percent of the projects at Company Z have 4 or more employees assigned to each project.(2)35 percent of the projects at Company Z have 2 or fewer employees assigned to each project.
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Buildings , , and are a total of meters tall. If building is times as tall as building and times as tall as building , what is the combined height, in meters, of buildings and ?
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Three copiers , , and , working simultaneously and independently at their respective constant rates, can copy a certain document in 6 minutes. How long does it take Copier <font color='#FE8080'>Z</font>, working alone at its constant rate, to copy the document?

(1) Copiers and , working simultaneously and independently at their respective constant rates, can copy the document in 12 minutes.

(2) Copiers and , working simultaneously and independently at their respective constant rates, can copy the document in 9 minutes.
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In the figure above, if , then

300难题 What is the value of $$\frac{x}{yz}$$? 1. x=$$\frac{y}{2}$$ and z=$$\frac{2x}{5}$$ 2. $$\frac{x}{z}$$ =$$\frac{5}{2}$$ and $$\frac{1}{y}$$ = $$\frac{1}{10}$$
Ready4 A certain right triangle has side lengths x, y, and z, where x < y < z. If the area of this triangular region is 1, which of the following indicates all of the possible values of y?
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If function f(z) represents the sum of the distinct prime factors of z, then what is the value of f(f(250))?
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If z = xy, then does z = 1?

(1) x(y − x) = 0

(2) y(x − y) = 0
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If x is a positive integer, does z = 0?

(1) zx = x

(2) z/x = x
第一期 Each bit of a five-digit password may consist of 0-9, a-z, A-Z. What`s the number of different passwords in total, when all the elements can be repeated?
181215 f(x)=$$\frac{z}{x}$$.The definition domain of $$x_1$$,$$x_2$$ is the range of f(x). Is f$$(x_1)$$ less than f$$(x_2)$$ when $$x_1$$<$$x_2$$? 1:$$x_1$$>0 2:z > 0
190215 Is the sum of x and y a multiple of 3? x,y,z are integers. 1: x+z is a multiple of 3. 2: x+2z is a multiple of 3.
OG18-定量推理 A certain right triangle has sides of length x, y, and z, where x ＜ y ＜ z. If the area of this triangular region is 1, which of the following indicates all of the possible values of y ?
PREP07 Test 1 If x, y, and z are integers and xy + z is an odd integer, is x an even integer?(1) xy + xz is an even integer.(2) y + xz is an odd integer.
PREP07 Test 1 On the number line, the distance between x and y is greater than the distance between x and z. Does z lie between x and y on the number line?(1) xyz < 0(2) xy < 0
PREP07 Test 1 If x, y, and z are integers greater than 1, what is the value of x + y + z ?(1) xyz = 70(2) $$\frac{x}{yz} = \frac{7}{10}$$
Magoosh If wxyz $$\neq$$ 0, does the ratio of w to x equal the ratio of y to z?(1)$$\frac {w}{y}$$ = $$\frac {x}{z}$$(2) wy = xz