This quiz works best with JavaScript enabled. Home > Class 9 > Class 9 Maths Chapter 1 Number Systems – Quiz 14 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 9 Maths Chapter 1 Number Systems Quiz 14 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The 2 sub-sets of all Real Numbers are ..... A) Whole and counting. B) Integers and fractions. C) Positive and negative. D) Rational and irrational. Show Answer Correct Answer: D) Rational and irrational. 2. You cannot perform arithmetic operations on binary numbers A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 3. Name the number system that best describes the situation.Shoe size. A) Whole Numbers. B) Integers. C) Rational Numbers. D) Irrational Numbers. E) Real Numbers. Show Answer Correct Answer: C) Rational Numbers. 4. 1 multiplied by 0 is equal to 0 A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 5. The radix of Hexadecimal number system is A) 6. B) 9. C) 14. D) 16. Show Answer Correct Answer: D) 16. 6. What is the number system the computer can understand? A) Decimal. B) Binary. C) Hexadecimal. D) Octal. Show Answer Correct Answer: B) Binary. 7. After rationalising the denominator of $\frac{7}{3\sqrt{3}-2\sqrt{2}}$ A) 13. B) 19. C) 5. D) 35. Show Answer Correct Answer: B) 19. 8. When converting binary to octal, in how many digits should the binary number be separated by? A) One (1). B) Two (2). C) Three (3). D) Four (4). Show Answer Correct Answer: C) Three (3). 9. Which out of the following Binary numbers is equivalent to decimal number 24 A) 11111. B) 11000. C) 101010. D) 00010. Show Answer Correct Answer: B) 11000. 10. The 2's complement of 11100111 is ..... A) 11100110. B) 00011001. C) 00011000. D) 00011010. Show Answer Correct Answer: B) 00011001. 11. Calculate $\frac{2}{3}-\left(-\frac{4}{3}\right)$ A) $-\frac{2}{3}$. B) -2. C) 2. D) 3. Show Answer Correct Answer: C) 2. 12. The number of digits required to represent a decimal number 31 in equivalent binary form are A) 2. B) 3. C) 4. D) 5. E) 6. Show Answer Correct Answer: D) 5. 13. Find the sum. 5.26 + 36.4 + 7 A) 42.6. B) 41.73. C) 48.66. D) 89.7. Show Answer Correct Answer: C) 48.66. 14. Convert the following octal number to decimal.17 A) 51. B) 82. C) 57. D) 15. Show Answer Correct Answer: D) 15. 15. Octal to binary conversion:$\left(24\right)_8$ A) $\left(111101\right)_2$. B) $\left(010100\right)_2$. C) $\left(111100\right)_2$. D) $\left(101010\right)_2$. Show Answer Correct Answer: B) $\left(010100\right)_2$. 16. What is 4/7 as a decimal? A) 0.7. B) 0.57. C) 0.74. D) 0.47. Show Answer Correct Answer: B) 0.57. 17. What is 1001 + 1010 + 0110 as a Denary (Base 10) number? A) 22. B) 23. C) 24. D) 25. Show Answer Correct Answer: D) 25. 18. Jenny goes to karate class every 12 days.and too the library every 18 days. On December 1st she went to both class and the library. On what date will she do both class and go to the library? A) 24 days. B) 36 days. C) 42 days. D) 52 days. Show Answer Correct Answer: B) 36 days. 19. The decimal expansion of the number is $\sqrt{2}$ A) A finite decimal. B) 1.41421. C) Non-terminating non-recurring. D) Non-terminating recurring. Show Answer Correct Answer: C) Non-terminating non-recurring. 20. -4.7 x 3.2-(-.77) A) -15.04. B) -14.27. C) -15.81. D) 15.81. Show Answer Correct Answer: B) -14.27. 21. The 1's complement of 10011101 is ..... A) 01100010. B) 10011110. C) 01100001. D) 01100011. Show Answer Correct Answer: A) 01100010. 22. A square wall has an area of 87.5 square feet. Which best represents the length of the wall? A) 43.75 feet. B) 21.9 feet. C) 9.4 feet. D) 7656 feet. Show Answer Correct Answer: C) 9.4 feet. 23. Hex equivalent of 10001101 A) 8D. B) 86. C) 8E. D) 97. Show Answer Correct Answer: A) 8D. 24. 12 + (-2) A) -10. B) -14. C) 14. D) 10. Show Answer Correct Answer: D) 10. 25. Which is an example of the commutative property of multiplication? A) 4 x (1 x 2) = (4 x 1) x 2. B) 2 x 2 = 4 x 1. C) 2(3) = 2(4). D) 3 x 4 = 4 x 3. Show Answer Correct Answer: D) 3 x 4 = 4 x 3. ← PreviousNext →Related QuizzesClass 9 Maths Chapter 1 Number Systems Quiz 1Class 9 Maths Chapter 1 Number Systems Quiz 2Class 9 Maths Chapter 1 Number Systems Quiz 3Class 9 Maths Chapter 1 Number Systems Quiz 4Class 9 Maths Chapter 1 Number Systems Quiz 5Class 9 Maths Chapter 1 Number Systems Quiz 6Class 9 Maths Chapter 1 Number Systems Quiz 7Class 9 Maths Chapter 1 Number Systems Quiz 8Class 9 Maths Chapter 1 Number Systems Quiz 9Class 9 Maths Chapter 1 Number Systems Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books