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190124 还原机经选题: 文字题&几何
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A shop sold 10 sets of TV in a week. What is the median of the daily sales?
1: At least 1 TV set was sold every day.
2: At most two TVs were sold every day.
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190124
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∠ABM=45°, EF//MN. Quadrilateral ABCD is rectangular. AB=？
1：AE=3
2：BF=15
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190321
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Teams A and B played basketball together. In the first half of the game, team A was 20 points behind team B. Which team won the game in the end?
1: In the second half of the game, team A won twice as many points as team B.
2: The total score of team B was 90.
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190321
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n is a positive integer.$$10 \leq n \leq 48$$. The tens digit of n is twice the unit digit. n =?
1: n is odd.
2: n is a multiple of 7.
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190415
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S=S={1,2,3,4,5,11,x}. x is a positive integer. Is ?
1: The median of S is 4.
2: x is larger than or equal to the median.
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190310 还原机经选题: 数论&代数
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The number of people in the tour group is counted as x. The ticket rules of the amusement park are: when x≤10, the total ticket price is $120; when 11≤x≤20, the total ticket price is 80 + 4x dollars; when x > 20, the total ticket price is 8x dollars. How many people are there in group B?
1: Group A has three fewer people than group B.
2: Group B pays $4 more than group A.
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190310
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Is X an odd number?
1: The minimum prime factor of X is 5
2: The maximum prime factor of X is 11
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190310 还原机经选题: 文字题&几何
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A company consists of managers and employees. What is the total number of people in this company?
1: Managers account for 1/4 of the total number of managers, of which women account for 2/3.
2: The company has a total of 600 male managers.
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190310
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Is the quadrilateral ABCD a square?
(1)AC=BD
(2)∠A=90°
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190310
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A teacher graded 10 students. If the teacher added X points to the score of each student on the basis of the original one, or reduced Y points to that of each student. What was the difference between the average scores in the two cases?
1：X+Y=20
2：X-Y =4
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190310
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A positive integer x is less than 50. The remainder of x divided by 7 is 1. x=?
1: The remainder of x divided by 9 is 7.
2: The remainder of x divided by 4 is 3.
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190310
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Is |x-y|>|x-z|？
1：|y|>|z|
2：x<0
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190124
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The average of five integers is 24. How many of these five numbers are greater than 24?
1: The sum of the two maximum numbers is 59.
2: The sum of the two minimum numbers is 39.
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190310
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Is x > 5？
1：$$x^2 > 25$$
2：2x+7 > 0
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191031
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A person works five days a week with basic salary of $ 70 per day. Then on any day if the sales reach $ 500 , he will be rewarded with 5% of the sales for that day. So did his income last week exceed $450.
1.His sales exceeded$500 for four days in a week
2. One day in a week he sold $ 1500
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190302
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Someone investigated 100 people, 30 of whom bought milk. How many people bought both milk and orange juice?
1: Forty people bought orange juice.
2: There were 50 people who only bought milk or orange juice.
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191031
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In this figure, the large circle and the smaller circle have the same center (A). Line segment AC, a radius of the larger circle, intersects the smaller circle at point B, and line segment AE, another radius of the larger circle, intersects the smaller circle at point D. What is the radius of the smaller circle?
(1)BC=6
(2)Arc CE : Arc BD=3
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191031
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If xy≠0, and x≤y, is x=y?
(1)y is the greatest common factor of x and y
(2)x is the least common multiple of x and y
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191031
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If 6mn4 is a four-digit integer, then is m+n>10?
(1) 6mn4 can be divisible by 134
(2) 6mn4 = 134k+r, where 0≤r<134, and 47≤k≤52
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191031
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If $$xa^4+yb^3=5$$，then x+y=？
(1)$$xa^4 =x$$
(2) $$yb^3 = y$$
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