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191020 Both List I and List II consist of consecutive integers, respectively, and the smallest numbers in these two lists are the same. What is the difference between the median of list I and the average of list II?
(1)list I has seven integers, and list II has eight integers
(2)the smallest integer in these two lists is 10
191020 If m and n are positive integers, is $$ \sqrt{m^n}$$ an integer? (1)m is a square of an integer (2)n is a square of an integer
190215 Is n=u? 1：$$n^{2}$$+$$u^{2}$$=0 2：$$n^{2}$$-$$u^{2}$$=0
191020 $$x=a \sqrt{b}$$，$$y=c \sqrt{d}$$，neither x nor y is integer，is $$\sqrt{xy}$$ integer？ (1)$$\sqrt{xy}$$ is an integer (2) is an integer
190215 Is $$\sqrt{13m}$$ an integer? m is a natural number. 1: 117m is the square of an integer. 2: $$\frac{m}{117}$$ is the square of an integer.
190215 Someone rented a taxi for five days. He drove 900 miles in five days. He drove 200 miles on the first day. How much did he drive the next day? 1: The distance he drove on the first day was 40% of the total of the first three days. 2: The sum of the first three days was equal to the sum of the last three days.
190113 x, y, and z are consecutive integers. 0 < x < y < z. Is xz even? (1) xy is even. (2) xyz is divisible by 4.
190207 R, Q, S are positive integers greater than 1. Do R and Q have the same prime factor? 1: R and S do not have the same prime factor. 2: S and Q do not have the same prime factor.
190207 A person bought two sweaters and a belt at a discount. What is the average discount? 1: The sweater was 10% off. 2: The belt was 20% off.
190207 x,y are positive integers. The reminder is 3 when x is divided by y . Is 6 a factor of x? 1: 2y is a multiple of 3. 2: x
190207 The average of six integers, U,V,W,X,Y,Z is 42. Is the median of these six numbers less than 42? 1: All of the numbers are no less than 41. 2: Y=47.
190603 As shown in the figure, the rectangle inside is a grassland, the outside is a runway, there are four quarter arcs, and the radius is d, what is the area of the runway?
(1)The area of the grassland is 15d
(2)The area of the grassland is 150
190302 There is a set of {1,2,3,4,5,6}. What is the probability that two non-repeated numbers are randomly selected from the set and the sum of the two numbers can be divided by 4? 1: One of the two numbers chosen is three times the other. 2: Both numbers selected are odd.
190302 r,s,t are three real numbers. Will the average and median of the three numbers be equal? 1: The average of the three numbers is s. 2: r < s < t
190407 x is a positive integer. Is 24 a factor of x? 1: 48 can be divided by 3x. 2: 60 can be divided by 5x.
Does x+y=5? (1) 4x+y=17 (2) x+4y=8
How many crayons are in a certain box? (1) If the crayons were evenly distributed among a group of 7 children, 3 crayons would be left over. (2) If the crayons were evenly distributed among a group of 4 children, 2 crayons would be left over.
At a certain company, each employee has a salary grade s that is at least 1 and at most 5. Each employee receives an hourly wage p, in dollars, determined by the formula p = 9.50 + 0.25(s - 1). An employee with a salary grade of 5 receives how many more dollars per hour than an employee with a salary grade of 1?
Manhattan The average (arithmetic mean) height of five of Peter's friends is 70 inches. What will be the new average height if Peter is included in the group? (1) Peter's height is 1 foot greater than the average height of his five friends (1 foot = 12 inches). (2) Peter is 5 inches taller than the tallest of his five friends.
Ready4

If lines and are perpendicular to each other, is the slope of line positive?

(1) line passes through the point

(2) lines and intersect at the point