This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Mathematics Chapter 9 Sequences And Series – Quiz 38 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Mathematics Chapter 9 Sequences And Series Quiz 38 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Given the sequence:25, 21, 17, 13, ..... Write the general term A) T$_{n}$ = 4n + 29. B) T$_{n}$ =-4n + 25. C) T$_{n }$=-4n + 29. D) T$_{n}$ = 4n + 25. Show Answer Correct Answer: C) T$_{n }$=-4n + 29. 2. As early as Grade 3, Khent was taught by his parents to save money. He has a piggy bank. He starts to deposit money every month in the following pattern for a period of two years:10, 15, 20, 25, and so on. How much will be the total amount of the money he has after two years? A) 125. B) 1, 620. C) 3, 240. D) 135. Show Answer Correct Answer: B) 1, 620. 3. The 6th term in the arithmetic sequence 18, 11, 4, ..... A) -3. B) -10. C) -17. D) -24. Show Answer Correct Answer: C) -17. 4. France had about 8700 new cases of Covid-19 on 7.April.2020. If the spread rate of the virus in France under quarantine was consistently 0.85, how many new cases of the virus would there be on 30.April.2020? A) About 176. B) About 207. C) About 244. D) None of the above. Show Answer Correct Answer: B) About 207. 5. What is the explicit formula for the sequence?-1, 2, -4, 8, ..... A) $a_n=-\frac{1}{2}\left(2\right)^{n-1}$. B) $a_n=-\frac{1}{4}\left(2\right)^{n-1}$. C) $a_n=-2\left(-\frac{1}{2}\right)^{n-1}$. D) $a_n=-\left(-2\right)^{n-1}$. Show Answer Correct Answer: D) $a_n=-\left(-2\right)^{n-1}$. 6. Find the 25th term of the sequence if a$_{1}$ = 5 and d = 0.5.Meaning the first term is 5 and the common difference is 0.5. A) 18. B) 17. C) 15. D) 14TagsCCSS.MATH.CONTENT.HSF.BF.A.1CCSS.MATH.CONTENT.HSF.BF.A.2CCSS.MATH.CONTENT.HSF.LE.A.2. Show Answer Correct Answer: B) 17. 7. Determine if this represents a ..... 50000, 5000, 500, 50 ..... A) Arithmetic Sequence. B) Geometric Sequence. C) Arithmetic Series. D) Geometric Series. Show Answer Correct Answer: B) Geometric Sequence. 8. The current population of Somalia is about 1.1 million. The population has an annual increase of 2.9% of their population. Which is the correct NOW-NEXT statement to represent their total population? A) NEXT= 1.29xNOW. B) NEXT = 1.029xNOW. C) NEXT= 0.0029xNOW. D) NEXT= 2.9xNOW. Show Answer Correct Answer: B) NEXT = 1.029xNOW. 9. Find the sum:11 + 15 + 19 + ..... + 83 A) 19. B) 83. C) 893. D) 624. Show Answer Correct Answer: C) 893. 10. A student group starts walking for exercise. They start by walking 1 mile. They increase the distance they walk by 0.1 miles every day. If they do this for a 31 day month how far will they walk? A) 62 miles. B) 77.5 miles. C) 80 miles. D) 100 miles. Show Answer Correct Answer: B) 77.5 miles. 11. The first term of a geometric sequence is 18 and the common ratio is 3.5. What is the 5th term of the sequence? A) 2701. B) 2700. C) 2701.125. D) 2913.24. Show Answer Correct Answer: C) 2701.125. 12. The expression formed by adding the terms of a geometric sequence is called ..... A) Geometric sequence. B) Geometric means. C) Geometric series. D) Common ratio. Show Answer Correct Answer: C) Geometric series. 13. Find the sum of the first 18 terms of arithmetic progressions-8, 0, 8, ..... A) -1080. B) -1800. C) 1800. D) 1080. Show Answer Correct Answer: D) 1080. 14. Write a rule for the arithmetic sequence. 2, 6, 10, 14, ..... A) A$_{n }$= 3n-2. B) A$_{n }$= 4 + 2. C) A$_{n }$= 2n + 4. D) A$_{n }$= 4n-2. Show Answer Correct Answer: D) A$_{n }$= 4n-2. 15. Classify this sequence as ARITHMETIC, GEOMETRIC or NEITHER.-2, 6, -18, 54, ..... A) ARITHMETIC. B) GEOMETRIC. C) NEITHER. D) None of the above. Show Answer Correct Answer: B) GEOMETRIC. 16. Find the next 3 numbers in the sequence.24, 34, 44, 54, 64, ..... , ..... , ..... A) 46, 45, 44. B) 76, 87, 98. C) 74, 84, 94. D) 10, 20, 30. Show Answer Correct Answer: C) 74, 84, 94. 17. What is the common difference of the following sequence?7, 27, 47, 67, ..... A) 10. B) 20. C) 3. D) -20. Show Answer Correct Answer: B) 20. 18. Write an EXPLICIT formula for the sequence defined by $a_1=96\\\\\\\\\\a_n=-\frac{1}{4}a_{n-1}$ A) $a_n=96+\left(n-1\right)\left(-\frac{1}{4}\right)$. B) $a_n=96\left(-\frac{1}{4}\right)^{n-1}$. C) All the above. D) None of the above. Show Answer Correct Answer: B) $a_n=96\left(-\frac{1}{4}\right)^{n-1}$. 19. Evaluate the infinite geometric series3-2 + $\frac{4}{3}$ $\frac{8}{9}$ A) $\frac{5}{4}$. B) $\frac{5}{6}$. C) $\frac{9}{5}$. D) Does Not Exist. Show Answer Correct Answer: C) $\frac{9}{5}$. 20. Which of the following is NOT a geometric sequence? A) 6, 18, 54, 162. B) 2, 18, 162, 1458. C) 14, 28, 42, 56. D) 8, 24, 72, 216. Show Answer Correct Answer: C) 14, 28, 42, 56. 21. In some investment accounts interest is computed on interest that has been earned in previous years. What is this method of computing interest called? A) Compound interest. B) Double interest. C) Simple interest. D) Not enough information. Show Answer Correct Answer: A) Compound interest. 22. 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. 23. Find the 8th term of the sequence:t(n) = 2(5)$^{n-1}$ A) 156250. B) 80. C) 16. D) 10000000. Show Answer Correct Answer: A) 156250. 24. In geometric series if r =-1, and n is odd number, then the sum of its geometric sequence is equal to A) 0. B) Its first term. C) 1. D) Its common ratio. Show Answer Correct Answer: B) Its first term. 25. Evaluate S$_{12}$ for the arithmetic series where:a$_{1}$=?, a$_{12}$=48, and d=4 A) 310. B) 312. C) 620. D) 624. Show Answer Correct Answer: B) 312. ← 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