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181215
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$$\frac{\frac{1}{\sqrt{2}}}{\sqrt{\frac{3}{2}}}$$=?
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181215
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Students A and B skate together. Student A circles with a radius of 10 feet. B circles with a radius of 5 feet. When both A and B finish skating around their respective circles, how much more distance does A skate than B?
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181215
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Is the integer X a factor of 24?
1: X is a factor of 12.
2: X is a factor of 18.
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181215
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In the xy coordinate system, what is the coordinate of the point that is symmetric with respect to the line y=x relative to point P(-1, -2)?
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181215
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x,y,z are three consecutive odd integers. x < y < z. What`s the values of x,y,z, respectively?
1: 2y = x+z
2: x,y,z are prime numbers.
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181215
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Oil were poured into 96 cups. There were 8 ounces in each cup. How many cups are needed if the amount of oil in each cup is reduced by $$\frac{1}{3}$$?
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181215
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M, N < 56, M=8+N. M,N are positive integers. How many possibilities are there in (M,N)?
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181215
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There are three red balls and six white balls in the box A. There are 4 red balls and 7 white balls in the box B. A ball was taken out from box A randomly and put into box B. What's the probability of taking out a red ball from box B?
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181215
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The big circle is concentric with the small circle whose radius is r. An equilateral triangle is inscribed on the big circle and circumscribed on the small circle. What is the area of the shadow?
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181215
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r,s are non-zero integers. Is r/s a terminating decimal?
1: 1/r is a terminating decimal.
2: 1/s is a terminating decimal.
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181215
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Does the equation 2$$x^{2}$$+bx+8=0 have real solutions?
1: b < 0
2: lbl > 5
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The average of the six unknown integers is 42. Is the median of these six numbers less than 42?
1: All of the numbers are greater than 41.
2: The maximum number is 47.
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The sales company spent c dollars on n computers and sold them all at p dollars per computer. The company later purchased 100 computers at the same unit price and sold them all at the price of y dollars per computer. What's the profit of this company from selling these two batches of computers?
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181215
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ABCDEF is regular hexagon. ∠AOG = ？
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190603
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Is (a+b-c)(a+b+c)=a^2+b^2-c^2 ？
1：a^2-b^2=0
2：a^2+b^2=0
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190603
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How many multiples of 3 are between -100 and 100 ？
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190603
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Now we have to choose 4 teams from 6 teams to go to the game, then how many different selection methods are there?
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190603
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There is a car driving at 10mile / L on the A road and 15mile / L on the B road. It is known that the car has driven a total of 650 miles and consumed a total of 50L of oil. Then how far the car has been driven on the A road.
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190603
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Given that the height of a small tree is 5√3m, what is the height of a large tree?
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190603
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Scores of students in a large class have a distribution that is symmetric about the mean 60. 68 percent of the distribution lies within one standard deviation 10 of the mean, and 95 percent of the distribution lies within two standard deviations of the mean. What percent of the distribution is between score of 70 and score of 80?
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