This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Mathematics Chapter 9 Sequences And Series – Quiz 20 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Mathematics Chapter 9 Sequences And Series Quiz 20 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What are the next 2 terms:12.7, 19.2, 25.7, 32.2 ..... A) 38.7 and 45.2. B) 38.4 and 44.6. C) 37.7 and 42.2. D) None of the above. Show Answer Correct Answer: A) 38.7 and 45.2. 2. What is the common ratio of this sequence?\{2, 10, 50, 250, ..... \} A) 1, 250. B) 5. C) 10. D) 50. Show Answer Correct Answer: B) 5. 3. Write the first 6 terms of the sequence:a$_{n}$ =-2n-5 A) -9, -11, -13, -15, -17, -19. B) -5, -7, -9, -11, -13, -15. C) -7, -9, -11, -13, -15, -17. D) -7, -12, -17, -22, -27, -32. Show Answer Correct Answer: C) -7, -9, -11, -13, -15, -17. 4. Evaluate the series below. $\sum_{k=0}^{\infty}\frac{2}{3}\left(\frac{1}{\left(8\right)}\right)^k$ A) $\frac{3}{8}$. B) $\frac{8}{3}$. C) $\frac{16}{21}$. D) $\frac{21}{16}$. Show Answer Correct Answer: C) $\frac{16}{21}$. 5. Formula for a Finite Geometric Series? A) No idea. B) S = (Xk+1-X1)/(r-1). C) S = (Xk+1-X1)/(r+1). D) S = (Xk+1+X1)/(r-1). Show Answer Correct Answer: B) S = (Xk+1-X1)/(r-1). 6. A beach towel loses 2 mg with each wash-and-dry cycle. The product 4(-2) represents change in the mass after 4 wash-and-dry cycles. A) 2. B) -8. C) 8. D) 6. Show Answer Correct Answer: B) -8. 7. Arithmetic sequences involve A) Multiplication and division. B) Multiplication and addition. C) Addition and subtraction. D) Subtraction and division. Show Answer Correct Answer: C) Addition and subtraction. 8. What is the geometric mean between-3 and-27? A) $\pm3$. B) $\pm6$. C) $\pm9$. D) $\pm12$. Show Answer Correct Answer: C) $\pm9$. 9. In a GP the 3rd term is 24 and the 6th term is 192. The 10th term is A) 3070. B) 3072. C) 3068. D) 3074. Show Answer Correct Answer: B) 3072. 10. A bathroom floor has tiles arranged in 9 circles. The innermost circle contains 9 tiles. Each successive circle contains 9 more tiles than the previous circle. How many total tiles are on the bathroom floor? A) 81. B) 396. C) 405. D) 729. Show Answer Correct Answer: C) 405. 11. Find the sum:11 + 12 + 13 + ..... + 40 A) 791. B) 765. C) 76. D) 739.5. Show Answer Correct Answer: B) 765. 12. The geometric mean between the first two terms in a geometric sequence is 24 . If the third term is 8, find the first term. A) 256. B) 64. C) 56. D) 72. Show Answer Correct Answer: D) 72. 13. Find a formula for an for the arithmetic sequence. $a_3=11, a_8=21$ A) $a_n=7+2n$. B) $a_n=-5+7n$. C) $a_n=2+7n$. D) $a_n=5+2n$. Show Answer Correct Answer: D) $a_n=5+2n$. 14. In what type of sequence do you MULTIPLY a nonzero constant to the previous term? A) Arithmetic. B) Geometric. C) All the above. D) None of the above. Show Answer Correct Answer: B) Geometric. 15. Iseleah takes out a simple interest car loan to pay for her $ 8000 Toyota Camry. The interest rate is 6% and she will not pay anything for 4 years. How much money will Iseleah owe the bank after 4 years? A) $ 1920. B) $ 4800. C) $ 9920. D) $ 12800. Show Answer Correct Answer: C) $ 9920. 16. Joey created the arithmetic pattern below:1, 6, 11, 16, ..... What would the 7th term be in the pattern? A) 31. B) 26. C) 21. D) 36. Show Answer Correct Answer: A) 31. 17. Rewrite the series below in sigma notation:4+8+16+32+64 A) $\sum_{n=1}^54\left(2\right)^{\left(n-1\right)}$. B) $\sum_{n=1}^58\left(\frac{1}{2}\right)^n$. C) $\sum_{n=1}^52\left(2\right)^n$. D) $\sum_{n=4}^{64}\left(n\right)$. Show Answer Correct Answer: C) $\sum_{n=1}^52\left(2\right)^n$. 18. Is the sequence-4, -12, -36, -108, ..... geometric? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: A) Yes. 19. Which of the following is the common difference of the arithmetic sequence 4, 7, 10, 13, ..... ? A) 0. B) 1. C) 2. D) 3. Show Answer Correct Answer: D) 3. 20. What is the 14th term of the following geometric sequence:3, 9, 27, 81, ..... A) 14, 348, 907. B) 4, 782, 969. C) 1, 594, 323. D) 45. Show Answer Correct Answer: B) 4, 782, 969. 21. Given the sequence:125, 25, 5, ..... Write the explicit rule: A) $a_n=125\cdot5^n$. B) $a_n=125\left(\frac{1}{5}\right)^{n-1}$. C) $a_n=625\cdot5^n$. D) $a_n=125+5n$. Show Answer Correct Answer: B) $a_n=125\left(\frac{1}{5}\right)^{n-1}$. 22. Find the 22nd term of the following arithmetic sequence:5, 8, 11, ..... A) 14. B) 68. C) 63. D) 71. Show Answer Correct Answer: B) 68. 23. Given the sequence:a$_{n}$ = n! + 1What is the 6th term? A) 721. B) 121. C) 7. D) 719. Show Answer Correct Answer: A) 721. 24. The common difference of this arithmetic sequence \{19, 16, 13, 10\} A) 3. B) -3. C) 19. D) None of the above. Show Answer Correct Answer: B) -3. 25. Find the 10th term of the arithmetic sequence:3, 7, 11, 15, ..... A) 25. B) 35. C) 30. D) 20. Show Answer Correct Answer: B) 35. ← PreviousNext →Related QuizzesClass 11 Mathematics Chapter 9 Sequences And Series Quiz 1Class 11 Mathematics Chapter 9 Sequences And Series Quiz 2Class 11 Mathematics Chapter 9 Sequences And Series Quiz 3Class 11 Mathematics Chapter 9 Sequences And Series Quiz 4Class 11 Mathematics Chapter 9 Sequences And Series Quiz 5Class 11 Mathematics Chapter 9 Sequences And Series Quiz 6Class 11 Mathematics Chapter 9 Sequences And Series Quiz 7Class 11 Mathematics Chapter 9 Sequences And Series Quiz 8Class 11 Mathematics Chapter 9 Sequences And Series Quiz 9Class 11 Mathematics Chapter 9 Sequences And Series Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books