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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. math exams: GRE Practice Questions - 4 & Answer Key

Monday, August 1, 2011

GRE Practice Questions - 4 & Answer Key

  1. If $3x+7=5x+1$

    1. $2.5$
    2. $3.5 $
    3. $4 $
    4. $3 $
    5. $ 4.5$

  2. What is the next term in the sequence: 6, 3, 10, 7, 14, 11, ...?

    1. $19$
    2. $15 $
    3. $6 $
    4. $ 17$
    5. $ 18$

  3. The area of the basis of Cylinder A is 8 times the area of the basis of Cylinder B. What is the radius of Cylinder A in terms of the radius of Cylinder B?

    1. $r_{A}=\frac{r_{B}}{8}$
    2. $r_{A}=8r_{B} $
    3. $r_{A}=4r_{B} $
    4. $r_{A}=2\sqrt{2}r_{B} $
    5. $r_{A}=\frac{r_{B}}{4} $

  4. If $x^{2}-2xy+y^{2}=121$, $x-y=$

    1. $10$
    2. $11 $
    3. $12 $
    4. $13 $
    5. $14 $

  5. If c is equal to the sum b and twice of a, which of the following is the average of b and c?

    1. $a$
    2. $b $
    3. $c $
    4. $a+b $
    5. $b+c $

  6. $f(x)=4x+8$, $f(c+3)=8$, $f(c)=$

    1. $-8$
    2. $0$
    3. $3$
    4. $-3$
    5. $8$

  7. $5^{n}.125^{m}=78,125$, $n+3m=$

    1. $5$
    2. $ 6$
    3. $ 7$
    4. $ 8$
    5. $ 9$

  8. $\frac{3b^{2}}{a^{3}}=27a^{2}$

    1. $3a^{3}$
    2. $9a^{3} $
    3. $\frac{1}{9a^{3}} $
    4. $\frac{1}{a^{3}} $
    5. $\frac{1}{3a^{3}} $

  9. Which of the following statements must be true about the x and y coordinates that satisfy the equation $ay-ax=0$, $a \ne 0$, $x \ne 0$ ,$y \ne 0$

    1. $x>y$
    2. $xy=1 $
    3. $x=-y $
    4. $y>x $
    5. $x=y $

  10. What is the length of the side of a cube whose volume is 125 cubic units?

    1. $4$
    2. $ 5$
    3. $ 6$
    4. $ 7$
    5. $ 4.5$
    Answer Key
    1 D
    2 E
    3 D
    4 B
    5 D
    6 D
    7 C
    8 E
    9 E
    10 B

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