【GRE考满分题库检索】GRE 题目搜索_数学

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题目内容
In a set of cards, each card is colored one of three colors and each card is labeled with one letter as indicated in the table. If one card is to be selected at random from the set, what is the probability that the selected card will be blue or labeled with the letter W?
If the sum of all edges in a cube is 36, what is the volume of the cube?
In the xy-plane, a line pases through two points (6, 20) and (2, 22), respectively. Quantity A The x-intercept of the line Quantity B 36
(a+b)(c+d)=0 c≠-d Quantity A -a Quantity B b
R is a positive multiple of 21. Quantity A The remainder when 20R is divided by 12 Quantity B 0
In the above figure, points B, C and D are centers of three congruent circles, and circle C passes through the center of circle B and circle C. Quantity A The area of the shaded area Quantity B The area of the unshaded area
When x+1 is divided by 7, the remainder is 3. Quantity A The remainder when x is divided by 7 Quantity B 0
Integers $$x$$ and $$y$$ are each greater than $$1$$, and $$7 \lt xy \lt 13$$. How many different values of $$xy$$ are possible?
In a sequence, $$x_{n}=\frac{1}{x_{n+1}}$$, $$x_{9}$$=2 (n≥0) Quantity A $$x_{1}$$ Quantity B $$x_{18}$$
2 ≤ x ≤ 7 and 5 ≤ y ≤ 14 x and y are different positive integers. Quantity A The greatest possible value of $$\frac{5}{x-y}$$ Quantity B 5
Square EFGH is inscribed inside square ABCD. If the perimeter of square ABCD is 48, and ∠DEH=60°, then which of the following is nearest to the perimeter of the square EFGH?
Quantity A x Quantity B 60
On the number line, points R, S, and T have coordinates r, s, and t, respectively, where r=2t. Point R is to the right of point S, and point T is to the left of point R. Quantity A t Quantity B s
In triangle ABC shown, AB=BC and the measure of angle BAC is 58 degrees. Quantity A AC Quantity B AB
a > 1 Quantity A $$\frac{a}{a-1}$$ Quantity B $$\frac{a+1}{a}$$
$$0 \lt a \lt b \lt c$$ $$r=\frac{a}{a+b+c}$$, $$s=\frac{b}{a+b+c}$$, and $$t=\frac{c}{a+b+c}$$. Quantity A The average (arithmetic mean) of $$r$$, $$s$$ and $$t$$ Quantity B $$\frac{1}{3}$$
x and y are integers $$9^{6x}$$=$$81^{3y}$$ Quantity A x Quantity B y
In a quality control study, 200 boxes of brackets were examined; each box contained 50 brackets. For each box, the ratio, f, of the number of defective brackets in the box to the total number of brackets in the box was recorded. The number of defectives per box varied from 1 to 12, inclusive. Quantity A The sum of the 200 values of f Quantity B The sum of the squares of the 200 values of f
Quantity A r Quantity B 12
$$T_1, T_2, T_3, ........., T_k, .........$$ The sequence shown is defined by $$T_1=2$$ and $$T_{k+1}=\frac{1}{3}T_k$$ for each positive integer k. Quantity A $$T_5$$ Quantity B $$(3^{11}) T_{16}$$

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