This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Mathematics Chapter 9 Sequences And Series – Quiz 10 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Mathematics Chapter 9 Sequences And Series Quiz 10 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following is a geometric sequence? A) -1, 6, -36, 216, . B) -2, -4, -8, -16, . C) 2, 4, 6, 8, . D) 4, 8, -16, 32. Show Answer Correct Answer: A) -1, 6, -36, 216, . 2. Write a sequence that has two geometric means between 7 and 448. A) 7, 30, 144, 448. B) 7, 26, 110, 448. C) 7, 28, 112, 448. D) 7, 29, 113, 448. Show Answer Correct Answer: C) 7, 28, 112, 448. 3. Evaluate the arithmetic series described:11 + 18 + 25 + 32 ..... , S$_{7}$ A) 225. B) 450. C) 384. D) 224. Show Answer Correct Answer: D) 224. 4. Write the explicit formula for the sequence. 15, 22, 29, 36, 43, ..... A) $a_n=15+22\left(n-1\right)$. B) $a_n=15\cdot7^{\left(n-1\right)}$. C) $a_n=15+7\left(n-1\right)$. D) $a_n=29-14^{\left(n-1\right)}$. Show Answer Correct Answer: C) $a_n=15+7\left(n-1\right)$. 5. You spill some tea to six people. Every 7 days those six people spill the tea to six other people. How much tea was spilled after two months? A) $6T\cdot4$. B) $6^4T$. C) $42T^7$. D) $6^8T$. Show Answer Correct Answer: D) $6^8T$. 6. Identify the common difference. 10, 20, 30, 40, ..... A) 5. B) 10. C) 15. D) 20. Show Answer Correct Answer: B) 10. 7. What best describes the following infinite geometric series:1/3-1/9 + 1/27-1/81 + ..... A) Diverges. B) Converges. C) All the above. D) None of the above. Show Answer Correct Answer: B) Converges. 8. What is the sum of the first 18 terms of the sequence 9, 6, 3, ..... ? A) 567. B) -24. C) -33. D) -297. Show Answer Correct Answer: D) -297. 9. Find the a and d value for the arithmetic sequence ..... 109, 97, 85, ..... A) A = 12, d = 12. B) A = 109, d = 12. C) A = 109, d =-12. D) A =-12, d = 109. Show Answer Correct Answer: C) A = 109, d =-12. 10. If m, 15, n are three consecutive terms of an arithmetic sequence and m, 9, n are three consecutive terms of a geometric sequence, then m-n = A) 6. B) 6 or-6. C) 24. D) 24 or-24. Show Answer Correct Answer: D) 24 or-24. 11. Identify the common factor.96, 48, 24 ..... A) 2. B) -48. C) 1/2. D) -2. Show Answer Correct Answer: C) 1/2. 12. A website has 267, 500 subscribers and has reached its peak. The number of subscribers is decreasing at a rate of 8% each month.How many subscribers will there be after 7 weeks? (Round to the nearest whole number.) A) 477, 679 subscribers. B) 149, 800 subscribers. C) 149, 224 subscribers. D) 458, 448 subscribers. Show Answer Correct Answer: C) 149, 224 subscribers. 13. Which kind of sequence has a common factor? A) Arithmetic. B) Geometric. C) Other. D) None of the above. Show Answer Correct Answer: B) Geometric. 14. What is the first term of this geometric sequence ..... , 510, 3060, 18360, 110160, ..... A) 255. B) 85. C) 105. D) 25. Show Answer Correct Answer: B) 85. 15. N is an integer greater than 1A) n!B) n$^{n}$ A) A) is greater. B) B) is greater. C) The are equal. D) It can not be determined. Show Answer Correct Answer: B) B) is greater. 16. If a, b, c, d are four distinct positive numbers in AP then which of the following is true? A) Ac > bd. B) Ac < bd. C) Bc > ad. D) Bc < ad. Show Answer Correct Answer: C) Bc > ad. 17. For the geometric sequence3, 12, 48, 192, ..... What is $t_{10}$ A) 786 432. B) 3145728. C) 39. D) 262147. Show Answer Correct Answer: A) 786 432. 18. The sum of arithmetic progression 2, 5, 8, ..... , up to 50 terms is A) 3775. B) 3557. C) 3757. D) 3575. Show Answer Correct Answer: A) 3775. 19. What is the sum of the first 20 perfect squares? A) 3, 311. B) 2, 870. C) 2, 479. D) 1, 240. Show Answer Correct Answer: B) 2, 870. 20. Calculate the common difference in the arithmetic sequence:17, 14, 11, 8, ..... A) 0. B) -3. C) 10. D) 5. Show Answer Correct Answer: B) -3. 21. There are 7 arithmetic means between a$_{1}$ and a$_{8}$ A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 22. Evaluate the limit, or state that the limit does not exist 7x$^{2}$$^{ }$ 5x$^{2}$+2x A) 0. B) 7/5. C) DNE. D) Does anyone really know?. Show Answer Correct Answer: B) 7/5. 23. If the 5th term of a GP is 2, the product of its first nine terms is A) 256. B) 128. C) 512. D) None of these. Show Answer Correct Answer: C) 512. 24. Which of the following equations is the rule for this sequence:6, 11, 16, 21, ..... A) A$_{n}$ = 6 + 5(n-1). B) A$_{n}$ = 4 + 6(n-1). C) A$_{n}$ = 6-4(n-1). D) None of the above. Show Answer Correct Answer: A) A$_{n}$ = 6 + 5(n-1). 25. What are the first four terms of the sequence? a$_{n}$ = 1/(n$^{2}$-1) A) 0, 3, 8, 15. B) Undefined. C) Undefined, 1/3, 1/8, 1/15. D) 0, 1/3, 1/8, 1/15. Show Answer Correct Answer: C) Undefined, 1/3, 1/8, 1/15. ← 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 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books