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KMFPS	How many of the integers that satisfy the inequality (y+1)(y+2)(y+4)≥0 are less than 4?
200301 还原机经选题: 数论&代数	From 1 to 10, choose any two numbers to multiply, and the numbers can be selected repeatedly. What is the sum of all the products?
	The census indicates that times as many residents were children or teenagers as were seniors.If at the time of the census ,there were 540 more people aged 0-39 than people aged 40 or greater, then the population of Town Y at the time of the census was
Ready4	If $x^{-3}=-\tfrac{<font color='#FE8080'>1</font>}{8}$ , then $x^{-2}$ is equal to
	If f is the function defined for all k by f(k) = $$\frac{k^5}{16}$$, what is f(2k) in terms of f(k)?
Ready4	A square has an inscribed circle of radius 4 feet. The ratio of the area of the square to the area of the circle is x, and the ratio of the perimeter of the square to that of the circle is y. Which of the following is true?
Ready4	A 50% alcohol solution is made by mixing together a 30% alcohol solution with a 60% alcohol solution. What percent of the 50% alcohol solution is made from the 30% alcohol solution?
Ready4	In the $xy$ -plane, what is the slope of the line $2x+2y=7$ ?
181215	How many seconds does it take to drive 132 feet at an average speed of 50 miles/h? (1 mile=5280 feets, 1h=3600s)
OG19-数学分册	If the volume of a ball is 32,490 cubic millimeters, what is the volume of the ball in cubic centimeters? (1 millimeter= 0.1 centimeter)
190310	Five numbers are chosen randomly from 1 to 20 (boundaries are included). What's the probability that the five numbers include both 10 and 20?
Manhattan	Points A (-2, 3) and B (1, 7) lie on the coordinate plane. What is the length of line segment AB?
Ready4	If $(8)(3^{7})=3^{x}-3^{x-2}$ , what is the value of $x$ ?
191222 730高分节-数学测试	It is known that: 1^2+2^2+3^2+....+ 10^2=n, so 2^2+4^2+6^2+..8^2+...+18^2+ 20^2=？
Ready4	If positive integers $x$ and $y$ are not both even, which of the following must be odd?
OG12 OG15 OG16 OG17 OG18 OG19 OG20 OG2022	What is the difference between the sixth and the fifth terms of the sequence 2,4, 7,... whose $$n^{th}$$ term is $$n + {2}^{n-1}$$?
OG17 OG18 OG19 OG20 OG2022	If$$ mn \neq 0 $$ and 25 percent of n equals $$37\frac{1}{2}$$ percent of m, what is the value of $$\frac{12n}{m}$$?
190302 还原机经选题: 数论&代数	A,B are two-digit integers. The tens of A is three. The unit digit of B is 5. A(B+1)=2016. 5A+2B=？
Ready4	If positive integer $m$ is odd and $p$ is prime, which of the following must be even?
Ready4	Test version X of a soft drink is made up of 1 part syrup and 3 parts carbonated water. Test version Y is made up of 1 part syrup and 2 parts carbonated water. Finally, test version Z is a mixture of X and Y that has a 3:7 ratio of syrup to carbonated water. How many liters of test version X are needed to make 50 liters of test version Z?