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191222	There are 90 people who learn either A or G, 15% learn both,the number of people who learn A is two times as many as those who learn B,How many people who learn A ONLY?
191222	Is abx greater than 0? 1:ax>0 2:bx>0
191222	X,y,z are consecutive positive integers and x < y < z,is x+y+z divisible by 10? 1:x+z is divisible by 10 2:y is divisible by 10
191222	It is defined that x@y=ax+by, what is the value of 8@2=? 1:4@1= 9 2:2@2= 6
191222	14<[(n-1)!+n!+(n+1)!]/n!<15,what is the value of n?
191222	There are 21 songs in a music CD, where two songs are from the same musician James. What is the probability that these two songs are arranged to play on the first two places ?
191222	Given that z is a positive number, what is the value of xz ? 1:xz=-3x 2:xz=3x
191222	A wall needs to be painted by one or more colors. We have six different colors , where one of them is white. How many different ways is white color chosen ?
191222	$$\sqrt { 8 + \sqrt { 4 } 4 } * \sqrt { 8 - \sqrt { 44 } } =$$
191222	Now there is a coordinate system, and it is known that the coordinates of the two points are D (8, -2) and B (2,4). What is the coordinate of the intersection point of the vertical bisector of the DB and the x axis?
191222	If x and y are positive numbers, is $$x^5 < y^3$$? (1)$$x^4 < y^3$$ (2)$$x^5 < y^4$$
191222	Here is a sequence of 9 numbers, and g(n) means the value of nth term. For example, for the nine numbers: 9 8 7 6 5 4 3 2 1, then g(7)=3, so what's the value of g(g(g(4)))?
191222	There are four objects marked 1, 2, 4, 7 in A pocket and other four objects marked 3, 5, 8, and 9 in B pocket. Let's take one object from A pocket and one from B. The probability of A >B is p, and the probability of A
191222 KMFPS	What is the remainder when $$3^{50}$$ is divided by 4？
191222	The range of the set S is 30, and the range of the set V is 70. The set T is made up of all the elements in the set S and set V, what is the minimum possible range of the set T?
191222 730高分节-数学测试	Given that k=0.xyzxyzxyzxyz-, what is the value of z ? (1)1000k-k is divisible by 5 (2)1000k-k is an even integer
191222	A team of 15 people is working on a project. They work 8 hours per day and have completed 1/4 of the total project in 18 days. How many additional people, each working at the same constant rate, will be needed to complete the rest of the project in 6 days?
191222 还原机经选题: 数论&代数 730高分节-数学测试	If a, b, and c are positive integers, is $$2^a+2^b+2^c$$ a multiple of 10? (1)b=c (2)c=a+1
191222	As shown in the figure, a rectangle is inscribed in a semicircle, and the length and width are 16 and 8 respectively. What is the radius of the circle?
191222	There are ten cards marked with the numbers from 1 to 10 respectively. Draw two out of ten cards and never put them back. What's the probability that the sum of the two numbers on the two cards drawn is less than the average of the ten cards?