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Magoosh题集

Magoosh针对GRE考试备考材料相对可以，其推出的GMAT模考题对时间固定GMAT考生来说，老师并不建议过多时间花费在该材料上。这些题可以作为词汇拓展训练。

121 A box contains only white balls, red balls and green balls. What is the probability of selecting a ball that is either red or white?(1) The probability of selecting a white ball at random is$\frac {2}{5}$(2) The probability of selecting a green ball at random is$\frac {1}{3}$
122 Q is a cube. What is the volume of the cube?Statement #1: The total surface area of Q is 150 sq. cmStatement #2: The distance from one vertex through the center of Q to the opposite vertex is $5\sqrt{3}$
123 If d is a decimal, is d $\ge$ 1.55?(1) When d is rounded to the nearest tenth, the result is 1.6(2) When d is rounded to the nearest integer, the result is 2
124 If x and y are positive integers, is $\frac{X}{Y}$$\lt$${X+2}\over{Y+3}$? Statement #1: y > 20 Statement #2: x < 5
125 In the diagram above, O is the center of the circle and angle AOB = 144º. What is the area of the circle? Statement #1: The area of sector AOB is 40% of the area of the circle Statement #2: Arc ACB has a length of 14$\pi$.
126 What is the value of x?Statement #1:$(x – 5)^2$=0Statement #2: $(x – 3)^2$ = 4
127 The numbers a, b, and c are all non-zero integers. Is a > 0?Statement #1: $b^3$ = aStatement #2: $\sqrt[3]{C}$=a
128 Is y > x?Statement #1: y = x + 1Statement #2: y = $x^2$ + 1
129 In the diagram above, O is the center of the circle, DC = a and DO = b. What is the area of the circle? Statement #1: $a^2$ – 2ab + $b^2$ = 36 Statement #2: a + b = 22
130 P and Q are positive integers. Is P odd?Statement #1: （$P^2$）Q is oddStatement #2: P + Q is even
131 If wxyz ≠$\neq$0, does wxyz = 1?(1) w = $\frac{1}{x}$ , y = $\frac{1}{z}$(2) w$x^2$ = $1\over{xyz}$
132 What is the value of $9x^2$ – 30xy +$25y^2$ ?Statement #1: 3x – 5y = 20Statement #2: x + y = 12
133 What is the value of x?(1) $x^2$ - 5x + 6 = x - 3(2) 3x - (3 + y) = 2x - y
134 If n is a positive integer, is $\frac{1}{n}$ -${1}\over{n+1}$ $\lt$0.05?Statement #1: n is oddStatement #2: n is a positive multiple of 7
135 The figure on the left is an isosceles right triangle, and the figure on the right is a square of length 3. What is the value of b?Statement #1: b is the length of the diagonal of the square.Statement #2: the triangle and the square have the same area.
136 Is p $\gt$ q?Statement #1:$p^2$ >$q^2$Statement #2: $p^3$ >$q^3$
137 If O is the center of the circle, what is the area of the circle?(1) Triangle AOC has area 18(2) Arc ABC has length $3\pi$
138 A box contains only red chips, green chips and blue chips. If a chip is randomly selected from the box, what is the probability that the chip is either red or green?(1) The probability of selecting a green chip is $\frac{1}{3}$ (2) The probability of selecting a blue chip is $\frac{1}{7}$
139 If x is an integer, is x odd? (1) x + (x + 1) + (x + 2) is odd (2) $x^2$ is even
140 What is the value of x?Statement #1: $x^4$ = 2,401Statement #2: $x^5$ = 16,807

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