What is the common ratio in the geometric sequence 2, 6, 18, 54, ...? A 2 B 3 C 4 D 6 ✓ Correct Answer: Option B Common ratio r = 6/2 = 3 (or 18/6 = 3, 54/18 = 3). Practice SAT Exam Prep Quizzes → Browse All Questions Study Flashcards