This quiz works best with JavaScript enabled. Home > Unit V Mathematical Reasoning And Aptitude > Geometric Series – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Geometric Series Quiz 4 (10 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Given the geometric sequence 1, 5, 25, 125, ....., write an explicit formula.Hint: The formula needed is $a_n=a_1\left(r\right)^{n-1}$ A) $a_n=1\left(5\right)^{n-1}$. B) $a_n=5\left(5\right)^{n-1}$. C) $a_n=5\left(1\right)^{n-1}$. D) $a_n=1\left(1\right)^{n-1}$. Show Answer Correct Answer: A) $a_n=1\left(5\right)^{n-1}$. 2. The next two terms in the sequence 3,-6, 12,-24, ..... are A) 48 and-96. B) -48 and-96. C) -48 and 96. D) 48 and 96. Show Answer Correct Answer: A) 48 and-96. 3. What is the next number in the series: 4, 8, 16, 32, .....? A) 48. B) 64. C) 40. D) 56. Show Answer Correct Answer: B) 64. 4. What comes next in the series: 4, 8, 16, 32,? A) 64. B) 48. C) 40. D) 24. Show Answer Correct Answer: A) 64. 5. What is the common ratio of the geometric sequence below?5, 25, 125, 625 ..... A) 25. B) 20. C) 5. D) 4. Show Answer Correct Answer: C) 5. 6. Find the next term:81, 9, 1, 1/9, ..... A) 1/81. B) 1/27. C) 1/18. D) 18. Show Answer Correct Answer: A) 1/81. 7. What number should come next in the sequence:2, 6, 18, 54, .....? A) 108. B) 162. C) 216. D) 148. Show Answer Correct Answer: B) 162. 8. 2, 4, 8, 16,?a) 32b) 36c) 40d) 48 A) A. B) B. C) C. D) D. Show Answer Correct Answer: A) A. 9. Look at this series: 2, 6, 18, 54, ..... What number should come next? A) 108. B) 148. C) 162. D) 216. Show Answer Correct Answer: C) 162. 10. What is the common ratio of a geometric series if the first term is 2 and the fourth term is 16? A) 2. B) 4. C) 32. D) 8. Show Answer Correct Answer: A) 2. ← PreviousNext →Related QuizzesGeometric Series Quiz 1Geometric Series Quiz 2Geometric Series Quiz 3Geometric Series Quiz 5Geometric Series Quiz 6Geometric Series Quiz 7Geometric Series Quiz 8Geometric Series Quiz 9Geometric Series Quiz 10Geometric Series Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books