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题目内容
If $$x > 0, y > 0$$, and $$z < 0$$, which of the following numbers must be negative? Indicate ALL such numbers.
What is the probability that an integer to be chosen at random between 1 and 50, inclusive, will be divisible by 3 or 7?


In the figure shown, a circle is inscribed in a hexagon and $$L, M$$, and $$N$$ are points of tangency. In the hexagon, all sides have length 5 and all angles have the same measure.

Quantity A

The length of arc LMN

Quantity B

$$10$$




In the figure, if $$n-t=80$$, what is the value of $$n$$?

$$n=$$
The ratio of the amount spent on basic research in 1995 by the Department of Health and Human Services to the corresponding amount spent by the National Science Foundation was approximately
Which of the following equals the Department of Energy appropriation for 1996 as a percent of the total of all appropriations for basic research for 1996?
The decrease in dollars between 1995 spending on basic research and the 1996 appropriation for basic research was greatest for which of the following agencies?


Quantity A: a+b-c Quantity B: d
Quantity A: The number of possible integers $$x$$ for which $$x$$, 2, and 6 are the respective lengths of three sides of a triangle
Quantity B: 4
On level ground, each of two vertical radio towers is 50 meters away from an observer. The distances between the observer's eye and the tops of the two towers are 235 meters and 190 meters. Which of the following is closest to the number of meters by which the height of the taller tower exceeds the height of the shorter tower?


The area of triangular region PQR is 16.
Quantity A: The length of PQ
Quantity B: 8


The area of the shaded triangular region is 1/5 of the area of the triangular region RST
Quantity A: $$RW$$
Quantity B: $$(1/5)(RS)$$
In the figure, $$ABCE$$ is a square. What is the area of quadrilateral $$ABCD$$?


The figure above shows a washer in the shape of a circular ring. The diameter of the outer circle is 7 centimeters and the diameter of the inner circle is 5 centimeters. The outer edge of the washer is approximately how many centimeters greater than the inner edge of the washer?


A large cube is to be formed by placing together 27 identical white cubes as shown. The large cube will then be placed on a floor, and the 5 exposed faces will be painted black. How many of the original 27 cubes will have exactly 2 black faces?
The apex of a pyramid is directly above the center of its square base, and the distance from the apex to the center of the base is 12. If the length of each side of the square base is 10, what is the total surface area of the pyramid?
The ratio of the amount spent on basic research in 1995 by the Department of Health and Human Services to the corresponding amount spent by the National Science Foundation was approximately

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