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181215 The four sides of the square is tangent to the circle, as shown in the picture. The radius is 0.5. What is the area of the shaded part?
191222 730高分节-数学测试 A four-digit integer is formed by the numbers of 2, 3, 5, and 7. If four digits are all different, what is the probability that the four-digit integer greater than 5237?
191020 f(x)=1-x，-f(-f(-x))=?
Magoosh Working together, 7 identical pumps can empty a pool in 6 hours. How many hours will it take 4 pumps to empty the same pool?
Magoosh GMAT、gmat题库、gmat模考、gmat考满分In the diagram above, the triangle is equilateral with a side of 2. All three circles are of equal size and all are tangent to each other and to two sides of the triangle. Which of the following is the radius of one of the circles?
Ready4

In a 4000 meter race, the probability that Andy achieves a best time is 1/2, and the probability that Bruce achieves a best time is 1/3. What is the probability that neither will achieve a best time?
OG12 OG15 OG16 OG17 On Monday, a person mailed 8 packages weighing an average (arithmetic mean) of $$12\frac{3}{8}$$ pounds, and on Tuesday, 4 packages weighing an average of $$15\frac{1}{4}$$ pounds. What was the average weight, in pounds, of all the packages the person mailed on both days
191020 If $$x^3=-3$$, which of the following is the value of x2?
181215 Is $$\frac{xy^{2}}{z^{3}}>1$$? 1:x < z < y 2:x > 0
190302 还原机经选题: 数论&amp;代数 X(Y+1)=2016. 5X+2Y=？ 1：Y(2+3X)=2020 2：X=Y
PREP07 Test 1 Is 4z > -6 ?(1) z < 7(2) z > -1
OG20 Is $${x}{y} >{x}^{2}{y}^{2}$$?(1)$${14}{x}^{2}={3}$$(2)$${y}^{2}={1}$$
OG12 OG15 OG16 What is the value of integer n ?(1)n(n+1) = 6(2)$${2}^{2n}$$ = 16
What is the value of integer A ?1. $${n}={n}{A}$$2.$${1}^{n}\neq{n}$$
PREP07 Test 2 If x $$\neq -y$$, is (x-y)/(x+y)>1?(1) x > 0(2) y < 0
181215 (a*$$10^{c}$$)(b*$$10^{d}$$)=？ 1：ab-c=d+1 2：3ab-c=d+2
190124 e > d,Ls ed < 0? 1：e$$d^{2}$$ > $$e^{2}$$d 2：e+d=1
Magoosh The lengths of the sides of triangle ABC are such that AB = x + 2, BC = x - 3, and AC = y - 1. Which angle in triangle ABC is the largest?(1) x - y = 1(2) y = 8
Ready4

Is ab(b - 4) a positive integer?

(1) Both a and b are positive integers

(2) b-<font color='#FE8080'>1</font>=\tfrac{63}{b+<font color='#FE8080'>1</font>}
PREP07 Test 1 If p is a prime number greater than 2, what is the value of p ?(1) There are a total of 100 prime numbers between 1 and p + 1.(2) There are a total of p prime numbers between 1 and 3,912.