MathDB
Geometric Sequence

Source:

January 4, 2009
ratiogeometric sequence

Problem Statement

The second and fourth terms of a geometric sequence are 2 2 and 6 6. Which of the following is a possible first term? (A)\ \minus{}\!\sqrt3 \qquad (B)\ \minus{}\!\frac{2\sqrt3}{3} \qquad (C)\ \minus{}\!\frac{\sqrt3}{3} \qquad (D)\ \sqrt3 \qquad (E)\ 3