1.   Find .
    A. does not exist B. 7
    C. 5 D. 0
    Hint

  2.   Write as a fraction.
    A. B.
    C. D.
    Hint

  3.   Find the sum of the series 12 + 36 + 108 + ··· .
    A. 156 B. The sum does not exist.
    C. 480 D. 7,000,000
    Hint

  4.   Find
    A. B.
    C. The limit does not exist. D.
    Hint

  5.   Write as a fraction.
    A. B.
    C. D.
    Hint