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190302
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There are 365 days in a year. If the $$294^{th}$$ day is Friday, what is the last day of the year?
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190302
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uv > 0, Is $$u^{2}$$*$$v^{3}$$ > 0
1：u > 0
2：v > 0
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190302
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$$a_1$$=10,$$a_{n+2}$$=$$a_{n+1}$$+$$a_n$$.$$a_4$$-$$a_3$$=?
1：$$a_5$$-$$a_4$$=21
2：$$a_2$$=11
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190302
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What is the unit digit of n?
1: The tens digit of $$11^{n}$$ is 4.
2: The tens digit of $$5^{n}$$ is 2.
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190302
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Which quadrant does line y=2x+4 intersect parabola y=-$$x^{2}$$+3?
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190302
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There are 11 numbers in the sequence. What is the median of this series?
1: When the 11 numbers are arranged in order from small to large, the first five numbers are less than 5.
2: When the 11 numbers are arranged in the order of small to large, and the last five numbers are all greater than 5.
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190302
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The size of the rectangular picture frame is shown in the figure. The length of the outer border is 1.5 times of the width. The distance between the inner and outer borders is 2. The area of the border area is 196. What is the length of the frame's outer border?
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190302
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The distance one student walked in t seconds is 2/k. How far can the student walk y min at the same speed?
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190302
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There are four areas, A, B, C, and D, on a color plate. A student has four colors of paint. The student wants to choose a different color scheme for each adjacent area. How many kinds of painting schemes meet the requirement?
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190302
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All the angles in the figure below are right angles. What is the circumference of the figure?
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190302
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There are three points a, b, and c on the number axis. The distance between a to c is four times as far as that of b to c. The coordinate of a is -7/8. The coordinate of b is - 5/24. What is the coordinate of c?
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190302
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Is xy > 0？
1：x-y=1
2：lyl > 2
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190302
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Someone rode 30 km. What's his average speed?
1: The average speed of his first 20 km was 20 km/h.
2: The average speed of his last 20 km was 10 km/h.
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190302
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The teacher gave 45 candies to the students in one class, and each of them received the same number of candies. The remaining sugar was 3 less than the number of students. Which one of the options can't be the number of students in this class?
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190302
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Is x < 0？
1：$$x^{3}$$ < $$x^{4}$$
2：$$x^{3}$$ < $$x^{2}$$
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191031 还原机经选题: 数论&代数
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A straight line y=mx+b, a parabola$$ y=x^2+c$$. are the number of intersections of these two images no less than 1?
(1)b≥c
(2)m^2≥4(c-b)
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191031
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Here are two columns of numbers, the numbers in the left column are arranged in numerical order, and the right column is ordered according to the frequency of the numbers. What's the median?
1 ...... 4
2 ...... 9
a ...... 1
5 ...... b
(1)a=3
(2)b=2
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191031
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There are two cars, one is fast and the other is slow. They have been driving for 5 hours. What is the distance of the slow car?
(1)the average speed of fast car is 4mile/h faster than that of the slow car
(2)the distance traveled by the fast car is 170miles
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191031
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X and Y are positive integers less than 56, and X-Y = 8, how many sets of X&Y are there?
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191031
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It takes 20 minutes for Machine A, B, and C to finish a certain job together. And Machine A operating alone at its constant rate finish the same job in 240 minutes. Machine B operating alone at its constant rate finish the same job in 40 minutes. How many minutes will it take machines C alone to finish the same job?
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