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Ready4	${(\frac{x + 1}{x - 1})}^{2}$ If $x > 1$ , and if $x = \frac{1}{y}$ , then the expression above is equivalent to
OG18-数学分册	If S is a set of four numbers w, x, y, and z, is the range of the numbers in S greater than 2?(1) w - z >2(2) z is a the least number in S.
OG20 OG2022	If r and s are positive integers, is r + s even? 1.r is even. 2.s is even.
Ready4	The circle graph above represents the total amount of items sold at Store $M$ , broken down into six categories of different types of items they sell. If the center of the circle is $O$ and Store $M$ sells a total of 5,800 items, how many items are in category $G$ ? (1) $k=40$ (2) Combining all categories, except for $G$ , accounts for $288^{\circ}$ in the graph.
Ready4	If two positive integers $x$ and $y$ are not both even, then which of the following must be odd?
PREP07 Test 1	In the figure above, the radius of the circle with center O is 1 and BC = 1. What is the area of triangular region ABC ?
Magoosh	In a certain sequence, the term tn is defined as$$t_n = 3t_{n-1} - 2t_{n-2}$$ for all n > 2. If $$t_1 = -2$$ and $$t_2 = -1$$ , then $$t_4 =$$
Magoosh	$$(30^{30}) * (29^{29}) * (28^{28}) * . . . * (3^{3}) * (2^{2}) * (1^{1}) = N$$What is the highest value of K, such that $$\frac{N}{(125^{K})}$$ is an integer?
	What number is 15 percent of x ?(1)18 is 6 percent of x.(2)$$\frac2 3$$ of x is 200.
	3.2□△6If □ and △ each represent single digits in the decimal above, what digit does □ represent?(1)When the decimal is rounded to the nearest tenth, 3.2 is the result(2)When the decimal is rounded to the nearest hundredth, 3.24 is the result.
	What is the value of xy - yz?(1)y=2(2)x-z=5
	Will the first 10 volumes of a 20-volume encyclopaedia fit upright in the book rack shown above?(1)x = 50 centimeters(2)Twelve of the volumes have an average (arithmetic mean) thickness of 5 centimetres
OG12 OG15	A circular tub has a band painted around its circumference, as shown above. What is the surface area of this painted band?(1)x = 0.5(2)The height of the tub is 1 meter.
OG12 OG15	The table above shows the distance, in kilometers, by the most direct route, between any two of the four cities, R, S, T, and U. For example, the distance between City R and City U is 62 kilometers. What is the value of x ?(1)By the most direct route, the distance between S and T is twice the distance between S and R.(2)By the most direct route, the distance between T and U is 1.5 times the distance between R and T.
OG12 OG15 OG16 OG17	What is the tenths digit in the decimal representation of a certain number?(1)The number is less than $$\frac1 3$$(2)The number is greater than $$\frac1 4$$
OG12 OG15 OG16 OG17 OG18	How many people are directors of both Company K and Company R ?(1)There were 17 directors present at a joint meeting of the directors of Company K and Company R, and no directors were absent.(2)Company K has 12 directors and Company R has 8 directors.
OG12 OG15	At a certain picnic, each of the guests was served either a single scoop or a double scoop of ice cream. How many of the guests were served a double scoop of ice cream?(1)At the picnic, 60 percent of the guests were served a double scoop of ice cream.(2)A total of 120 scoops of ice cream were served to all the guests at the picnic.
	If a real estate agent received a commission of 6 percent of the selling price of a certain house,what was the selling price of the house?(1)The selling price minus the real estate agent's commission was $84,600.(2)The selling price was 250 percent of the agent purchase price of $36,000.
PREP07 Test 1	What is the number of members of Club X who are at least 35 years of age?(1)Exactly $$\frac3 4$$ of the members of Club x are under 35 years of age.(2)The 64 women in Club x constitute 40 percent of the club's membership.
OG12	Carlotta can drive from her home to her office by one of two possible routes. If she must also return by one of these routes, what is the distance of the shorter route?(1)When she drives from her home to her office by the shorter route and returns by the longer route, she drives a total of 42 kilometers.(2)When she drives both ways, from her home to her office and back, by the longer route, she drives a total of 46 kilometers.