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题目： If J, S, and V are points on the number line, what is the distance between S and V?(1)The distance between J and S is 20.(2)Thedistance between J and V is 25.

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题目： Ann, Carol, and Judy paid a total of $45 for their dinner at a restaurant. If Ann paid $$\frac2 5$$ of the total amount, Carol paid $17, and Judy paid the rest, what fraction of the total amount did Judy pay?

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题目： The figure shows a square patio surrounded by a walkway of width x meters. If the area of the walkway is 132 square meters and the width of the patio is 5 meters greater than the width of the walkway, what is the area of the patio, in square meters?

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题目： In a corporation, 50 percent of the male employees and 40 percent of the female employees are at least 35 years old. If 42 percent of all the employees are at least 35 years old, what fraction of the employees in the corporation are females?

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题目： A gardener is going to plant 2 red rosebushes and 2 white rosebushes. If the gardener is to select each of the bushes at random, one at a time, and plant them in a row, what is the probabilitythatthe2 rosebushes in the middle of the row will be the red rosebushes?

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题目： What number is 15 percent of x ?(1)18 is 6 percent of x.(2)$$\frac2 3$$ of x is 200.

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题目： The operation $$\bigodot$$ is defined for all nonzero numbers a and b by $$a \bigodot b =\frac a b-\frac b a$$. If x and y are nonzero numbers, which of the following statements must be true?I.$$x \bigodot xy = x(1 \bigodot y)$$II.$$x \bigodot y = -(y \bigodot x)$$III.$$\frac1 x \bigodot \frac1 y$$ =$$ y \bigodot x$$

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题目： If x and y are positive, what is the value of $$x -y$$?(1)$$\frac {x^2-y^2} {x+y}={1}$$(2)$$x+y=7$$

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题目： The function f is defined by $${f}({x})=-\frac{1} x$$ for all nonzero numbers x. If $${f}({a})=-\frac1 2$$ and $${f}({a}{b})=\frac1 6$$, then b =

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题目： There are 8 magazines lying on a table; 4 are fashion magazines and the other 4 are sports magazines. If 3 magazines are to be selected at random from the 8 magazines, what is the probability that at least one of the fashion magazines will be selected?

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题目： The value of $$({9}\cdot{10}^{7})({9}\cdot{10}^{8})$$ is closest to which of the following?

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题目： If n and k are positive integers, is $$\frac{n}{k}$$ an even integer?(1) n is divisible by 8.(2) k is divisible by 4.

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题目： In the figure, each side of square ABCD has length 1, the length of line segment CE is 1, and the length of line segment BE is equal to the length of line segment DE. What is the area of the triangular region BCE?

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题目： What is the sum of the integers from -190 to 195, inclusive?

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题目： Each of the 45 boxes on shelf J weighs less than each of the 44 boxes on shelf K. What is the median weight of the 89 boxes on these shelves?(1) The heaviest box on shelf J weighs 15 pounds.(2) The lightest box on shelf K weighs 20 pounds.