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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. math exams: GRE Practice Questions -1

Sunday, July 10, 2011

GRE Practice Questions -1

  1. If $5x+7=11$, then $5x-4=0$

    1. $11$
    2. $7$
    3. $5$
    4. $1$
    5. $0$

  2. The smallest prime number greter than 50 is

    1. $51$
    2. $52$
    3. $53$
    4. $54$
    5. $55$

  3. $\frac{6}{\frac{1}{5}+1}$

    1. $1$
    2. $\frac{1}{5}$
    3. $\frac{1}{6}$
    4. $5$
    5. $6$

  4. $\sqrt{(120-39)(68+13)}$

    1. $2$
    2. $20$
    3. $40$
    4. $80$
    5. $81$

  5. $(9^{y})^{3}$

    1. $9^{y+3}$
    2. $9^{6y} $
    3. $3^{3y^{2}} $
    4. $9^{y^{3}} $
    5. $3^{6y} $



  6. $27^{13}=3^{a}$, then $a=$

    1. $39$
    2. $29$
    3. $19$
    4. $13$
    5. $9$



  7. $x-y=h$, then $5x^{2}-10xy+5y^{2}=$

    1. $5h^{2}$
    2. $10h$
    3. $h^{2}$
    4. $5h$
    5. $10h^{2} $



  8. $27x^{2}-12$

    1. $3(3x-2)(3x+2)$
    2. $3(9x-2)(9x+2)$
    3. $9(3x-2)(3x+2)$
    4. $3(3x-2)(9x+2)$
    5. $(9x-2)(9x+2)$

  9. If the average of $3x$ and $9x$ is 6, then $x=$

    1. $20$
    2. $19 $
    3. $9$
    4. $3$
    5. $1$

  10. What percent of $5x$ is $10y$ if $x=2y$?

    1. $20 \%$
    2. $30 \%$
    3. $40 \%$
    4. $45 \%$
    5. $50 \%$

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