190124
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e > d,Ls ed < 0?
1:e$$d^{2}$$ > $$e^{2}$$d
2:e+d=1
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190124
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The square side is 13. The lengths of all of the line segments where the shadow intersects the square are 6. What is the area of the shadow?
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190124
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a=0.8b, b=0.8c. What is the percentage of A less than C?
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190124
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3=$$\sqrt[3]{y}$$,$$(\sqrt{y})^{6}$$=?
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190124
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The length of the rectangular garden is 3m longer than the width. The garden is surrounded by a classic walkway. The walkway is 3m wide. The total area of the rectangular garden and the footpath is 378 $$m^{2}$$. What is the length of the rectangular garden?
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190124 还原机经选题: 数论&代数
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Is 12500000 a factor of integer n?
1: n can be divided by $$5^{8}$$.
2: n can be divided by $$20^{5}$$.
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190124 还原机经选题: 文字题&几何
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The length of two adjacent sides of a quadrilateral is 30 and 40. Is the quadrilateral a rectangle?
1: The angle between the two sides is 90 °
2: The length of each diagonal of a quadrilateral is 50
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190124
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Is |x| < 1?
1:|x+1|=2|x-1|
2:|x|≠3
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190124
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$$( \sqrt{2}-1)^{-1}$$=?
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190124
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Is m > 2?
1:$$\sqrt{m\sqrt{m}\sqrt{2m}}$$ > 2
2:$$\sqrt{2\sqrt{2}\sqrt{2m}}$$ > 2
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190124
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The cuboid of 24*20*10 inch^3 is coated with a 1 inch plastic foam. How many cubic feet is the difference between the volume of the cuboid before and after coating the plastic foam?
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190124
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Which of the following options is the set of positive integers satisfying equation $$(x-1)^{2}$$ - 1 ≤ 0?
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190124
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The bottom circumference of a 3 m high cylindrical vessel is 4π$$m^{2}$$ . If the water is poured into the empty container at the speed of 3$$m^{3}$$/s , how long will it take for the water level to reach 1 m?
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190124
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The general term of the sequence of equal difference numbers is $$a_{n+1}$$=$$a_n$$+4.
.$$a_6$$=?
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190124
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20 people donated some money. Each person can only donate $9, $10, $11. What's the average donation of these 20 people?
1: The number of people who donated $9 is equal to the number who donated $11.
2: The number of people who donated $9 is less than the number who donated $10.
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190124
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x+2y+3z=7, x+3y+5z=12. x+y+z=?
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190124 还原机经选题: 文字题&几何
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Hexagon ABCDEF consists of rectangle BCEF, triangle ABF and triangle CDE. Triangle ABF and triangle CDE are congruent. AB = AF = 12, BC = 30. What is the possible length of AD?
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190124
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The rectangle in the design drawing is 11 inches in length and 8.5 inches width. The diamond is formed by connecting the midpoint of each side of the rectangle. The length of the corresponding garden to this design drawing is 44 feet. What is the area of diamond area in the garden? (1feet=12inch)
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190124
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m,n are prime numbers. How many factors does m$$n^{2}$$ have?
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190124 还原机经选题: 文字题&几何
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ABCD is a square, and the length of side is 60. DE is a quarter arc with C as the center and CD as the radius. EF is a quarter arc with B as the center and BE as the radius. FG is a quarter arc with A as the center AF as the radius. GH is a quarter arc with D as the center DG as the radius. What is the total length of arcs DE + EF + FG + GH?
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