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模考带练机经题	$$\frac{(1+\frac{1}{2})}{(1+\frac{1}{5})}$$ = x*$$\frac{1+\frac{1}{5})}{(1+\frac{1}{2})}$$ What is the value of x?
模考带练机经题	How many different prime factors does 2730 have?
模考带练机经题	(4.6$$10^{m}$$)(2.3$$10^{k}$$)=1.058$$10^{t}$$ Express t in terms of m and k
模考带练机经题	Is the quadrilateral ABCD square? (1) All three angles are 90° (2) Three sides are equal
模考带练机经题	The scores of 5 people are 80, 90, 85, 95 and 100 respectively. What is the new standard deviation of their scores after the following changes? (1) Add 10 points to everyone`s score (2) Change the average score to 85.5
模考带练机经题 KMFPS	How many positive odd factors larger than 1 does 210 have?
模考带练机经题	If x, y, and z are three consecutive odd numbers, is one of x, y, z a multiple of 7? (1)x + y + z is a multiple of 7 (2)xyz is a multiple of 7
模考带练机经题	x*$$(x-1)^{2}$$+$$(x-1)^{2}$$=0, what is the value of x ?
模考带练机经题	According to the picture, a square whose width is x is inscribed in a circle. What is the area of the shaded part? (1)shaded area =(π-2)x (2)square area is 8x
模考带练机经题	Is $$\frac{1}{a}$$ > $$\frac{1}{b}$$?$$ a\neq 0 $$,and $$ b\neq 0 $$ (1)a < b (2)a-b < 0 < a
模考带练机经题	According to the picture, a regular octagon is inscribed in a square. If the perimeter of the regular octagon is 16, what is the perimeter of the square?
模考带练机经题	There are three boys and three girls in a row. No girl can stand between boys, and no boy can stand between girls. How many different ways to stand in a line?
模考带练机经题	A teacher needs to select 3 boys and 3 girls from 7 boys and 7 girls, how many combinations are there?
模考带练机经题	A and B work together for 2 hours to complete $$\frac{2}{3}$$ of the task. The rest of the work was done by B alone, and B finished the rest in 3 hours. If A does it alone, how many hours will it take to complete the whole task?
模考带练机经题	If m is a positive integer, and 3 is a factor of m. How many different prime factors does m have? (1) $$\frac{m}{3}$$ has a factor of 3 (2)$$\frac{m}{3}$$ has only two different prime factors.
模考带练机经题	If m and n are positive integer, is m a factor of n? (1)m is a factor of 36 (2)n is a multiple of 12
模考带练机经题	If $$k_1$$=200,and $$k_n$$=200+0.2 $$k_{n-1}$$(k ≥ 2) ,the value of $$k_{40}$$ is between?
模考带练机经题	The triangle ABC is a right-angled triangle, and B is the right angle. If a point D is on AC, is the triangle BCD an isosceles triangle? (1) BD = AD (2) D is the midpoint of AC
模考带练机经题	A wooden ladder is 13 meters long, and the distance from the bottom of the ladder to the wall is 5 meters, so what is the range of the angle between the ladder and the floor?
模考带练机经题	A survey is about the situation of watching television among 100 people. There are 60 people watching sports program, 35 people watching the news program, and 40 people watching other programs. 10 people watch all the programs, and 5 people do not watch any programs. There are 10 people just watching two programs: the news and sports program, and 4 people just watching two programs: sports and other programs. How many people just watch one program: other shows?