This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Mathematics Chapter 9 Sequences And Series – Quiz 35 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Mathematics Chapter 9 Sequences And Series Quiz 35 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The 5th and 15th terms of a geometric sequence are 9 and 27. Is 85 a term of this sequence? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: B) No. 2. Given the sequence 4, 11, 18, 25 ..... what is a$_{3}$? A) 4. B) 11. C) 18. D) 25. Show Answer Correct Answer: C) 18. 3. The individual numbers in a sequences are called ..... A) Common difference. B) Successive term. C) Term. D) Geometric term. Show Answer Correct Answer: C) Term. 4. The first three terms of the sequence defined by $t_n=-0.3n+0.5$ A) 0.5, 0.8, 1.1. B) -0.3, 0.2, 0.7. C) 0.2, -0.1, -0.4. D) -0.3, -0.8, -1.3. Show Answer Correct Answer: C) 0.2, -0.1, -0.4. 5. Find the indicated sum for the geometric series.S$_{6}$ for (-4/5) + 8 + (-80) + 800 + ..... A) $_{S6}$ = 21, 845. B) $_{S6}$ = 72, 000. C) $_{S6}$ = 72, 727.2. D) $_{S6}$ =-128, 840.8. Show Answer Correct Answer: C) $_{S6}$ = 72, 727.2. 6. What is the 15th term of the arithmetic sequence:4, 10, 16, 22, ..... ? A) 60. B) 25. C) 88. D) 40. Show Answer Correct Answer: C) 88. 7. Use the first three terms of the trigonometric series to approximate the value of cos (pi/2) to four decimal places. A) 0.0200. B) 0.0408. C) 1.9800. D) -0.4665. Show Answer Correct Answer: A) 0.0200. 8. Find the sum of the arithmetic series ..... 3 + 5 + 7 + ..... + 17 A) 32. B) 80. C) 70. D) 160. Show Answer Correct Answer: B) 80. 9. Find the sum of 125 + 25 + 5 + ..... + S$_{9}$ A) $\frac{488280}{3125}$. B) $\frac{488281}{3125}$. C) $\frac{3125}{488280}$. D) $\frac{3125}{488281}$. Show Answer Correct Answer: B) $\frac{488281}{3125}$. 10. $a_n=-7n+8$ A) 1, -14, -21, -28, -35. B) -15, -22, -36, -36, -43. C) 1, 9, 17, 25, 33. D) 8, 1, -6, -13, -20. E) 1, -6, -13, -20, -27. Show Answer Correct Answer: E) 1, -6, -13, -20, -27. 11. A$_{1}$ =-4, a$_{8}$ = 38a) Find the common differenceb) Find the n-th term of the arithmetic sequencec) Find a$_{20}$ A) D = 5b) a$_{n}$ = 5n-10c) 110. B) D = 5b) a$_{n}$ =-4 + 5n c) 100. C) D = 6b) a$_{n}$ = 6n-10c) 110. D) D = 6b) a$_{n}$ =-4 + 6n c) 100. Show Answer Correct Answer: C) D = 6b) a$_{n}$ = 6n-10c) 110. 12. Find the 10th term of the equation a$_{n}$ = 2n$^{2}$ + 3n + 4 A) 232. B) 233. C) 234. D) 235. Show Answer Correct Answer: C) 234. 13. What is the value of r the common ratio of this series 1+5+25+125, , ? A) 1. B) 4. C) 5. D) 156. Show Answer Correct Answer: C) 5. 14. What would be the missing terms of the series-1-5-25 ..... 78125 A) 125 + 625-3125 + 15625. B) 125-625-15625. C) 125-625-3125-15625. D) 625-3125-15625. Show Answer Correct Answer: C) 125-625-3125-15625. 15. Describe the sequence, find the 5th term, and write the rule-8, -6, -4, -2 ..... A) Geometric, a$_{5}$ = 2, a$_{n}$ = 2n-10. B) Geometric, a$_{5}$ = 0, a$_{n}$ =-10n + 2. C) Arithmetic, a$_{5}$ = 2, a$_{n}$ =-10n + 2. D) Arithmetic, a$_{5 }$= 0, a$_{n}$ = 2n-10. Show Answer Correct Answer: D) Arithmetic, a$_{5 }$= 0, a$_{n}$ = 2n-10. 16. Find the next four terms in the arithmetic sequence-10, -6, -2, ..... A) 0, 4, 8, 12. B) 2, 6, 10, 14. C) 6, 10, 14, 18. D) 1, 5, 9, 13. Show Answer Correct Answer: B) 2, 6, 10, 14. 17. Evaluate the geometric series below:-2-10-50-250 ..... , Find S6 A) -7812. B) -9678. C) -8686. D) -9932. Show Answer Correct Answer: A) -7812. 18. What kind of sequence is illustrated below? 400, 200, 100, 50, 25, ..... A) Arithmetic. B) Geometric. C) Neither. D) None of the above. Show Answer Correct Answer: B) Geometric. 19. Write the recursive formula for 6, 17, 28, 39, 50 ..... A) A$_{n}$=a$_{n-1}$+11a$_{1}$=6. B) A$_{n}$=a$_{n-1}$-4a$_{1}$=6. C) A$_{n}$=a$_{n-1}$+9a$_{1}$=6. D) A$_{n}$=a$_{n-1}$+6a$_{1}$=6. Show Answer Correct Answer: A) A$_{n}$=a$_{n-1}$+11a$_{1}$=6. 20. Find the 10th term of the geometric sequences $\frac{1}{2}, 1, 2, 4, ..... $ A) -256. B) 256. C) 265. D) -265. Show Answer Correct Answer: B) 256. 21. Find the given term for the sequence.Find the 30th term of 20, 11, 2, -7, -16, ..... A) 29. B) -261. C) -241. D) Cannot be determined. Show Answer Correct Answer: C) -241. 22. Find the common difference:29, 21, 13, 5, ..... A) D =-10. B) D =-9. C) D =-8. D) D =-7. Show Answer Correct Answer: C) D =-8. 23. A convergent sequence is ..... A) A vertical asymptote. B) A set of numbers that don't approach a specific value. C) A set of numbers that stay constant. D) A set of numbers that approach a specific value. Show Answer Correct Answer: D) A set of numbers that approach a specific value. 24. A$_{n}$ = a$_{1}$ + (n-1) * dWhat formula is this? A) Explicit Arithmetic Formula. B) Explicit Geometric Formula. C) Arithmetic Series Formula. D) Geometric Series Formula. Show Answer Correct Answer: A) Explicit Arithmetic Formula. 25. Find the sum of the infinite geometric series, if it exists:5 + 4 + 3.2 + 2.56 + ..... A) 25. B) 30. C) -1. D) 0.8. Show Answer Correct Answer: A) 25. ← 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