Question Detail
Question
The sum to infinity of a geometric series is 5 and the first term is 2. What is the common ratio?
Correct Answer
Option B is the correct answer.
Detailed Explanation
S∞ = a/(1 - r) ⇒ 5 = 2/(1 - r) ⇒ 1 - r = 2/5 ⇒ r = 3/5.
Hint
The notes indicate answer B.