Question
Quantitative Ability and Data Interpretation Question on Arithmetic and Geometric Progressions
The first two terms of a geometric progression add up to 12. The sum of the third and the fourth terms is 48. If the terms of the geometric progression are alternately positive and negative, then the first term is
A
-2
B
-4
C
-12
D
8
Answer
-12
Explanation
Solution
The correct option is (C) : -12.