This quiz works best with JavaScript enabled. Home > Class 9 > Class 9 Maths Chapter 1 Number Systems – Quiz 11 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 9 Maths Chapter 1 Number Systems Quiz 11 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Carlos uses a cleaner after working in his garage. The bottle contains 64.2 mL of cleaner. He used 5.8 mL of the cleaner on Monday. On Tuesday, he used half of the remaining cleaner on a chemical spill. On Wednesday, he used 3.9 mL of the cleaner in the bottle. How many mL of cleaner did Carlos have left on Thursday? A) 58.4. B) 29.2. C) 25.3. D) 12.15. Show Answer Correct Answer: C) 25.3. 2. Evaluate:(3 + 2)(3-2) A) 1. B) 5. C) 7. D) 9. Show Answer Correct Answer: C) 7. 3. What is the GCF of 4 and 12? A) 3. B) 1. C) 6. D) 4. Show Answer Correct Answer: D) 4. 4. X (-8/9)-2/3 A) -1 and 1/9. B) -10/9. C) 2/9. D) -2/9. Show Answer Correct Answer: A) -1 and 1/9. 5. + (-1.7) x (-3.6) A) -8.43. B) 8.43. C) -3.81. D) -2.196. Show Answer Correct Answer: B) 8.43. 6. In BCD each number is represented by ..... bits A) 2. B) 3. C) 4. D) 5. Show Answer Correct Answer: C) 4. 7. Convert 8B3F16 to binary. A) 35647. B) 011010. C) 1011001111100011. D) 1000101100111111. Show Answer Correct Answer: D) 1000101100111111. 8. Asher and David are discussing the set of rational numbers between 1 and 2. Can you help them identify the correct options? A) 0.5. B) 2.5. C) 3/4. D) Any rational number in the form of a/b where 1 < a/b < 2, such as 1.1, 1.25, 1.5, 1.75, 3/2, 7/5. Show Answer Correct Answer: D) Any rational number in the form of a/b where 1 < a/b < 2, such as 1.1, 1.25, 1.5, 1.75, 3/2, 7/5. 9. Perform binary subtraction:101111-010101 =? A) 100100. B) 010101. C) 011010. D) 011001. Show Answer Correct Answer: C) 011010. 10. If x, y, z are positive real numbers, then find the value of $\sqrt{x^{-1}y\\}\times\sqrt{y^{-1}z\\}\times\sqrt{z^{-1}x\\}$ A) $xyz$. B) 1. C) $\frac{1}{xyz}$. D) $x^2y^2z^2$. Show Answer Correct Answer: B) 1. 11. Convert the following binary number to decimal.01011 A) 11. B) 35. C) 15. D) 10. Show Answer Correct Answer: A) 11. 12. The Number of digits in a binary number system are A) 10. B) 2. C) 8. D) 16. Show Answer Correct Answer: B) 2. 13. On multiplication of (10.10) and (01.01), we get A) 101.0010. B) 0010.101. C) 011.0010. D) 110.0011. Show Answer Correct Answer: C) 011.0010. 14. Which one is a self-complementing code? A) Gray code. B) Binary code. C) Excess-3 code. D) BCD. Show Answer Correct Answer: C) Excess-3 code. 15. Convert binary 111111110010 to hexadecimal. A) EE2. B) FF2. C) 2FE. D) FD2. Show Answer Correct Answer: B) FF2. 16. What is the place value of 8 in the number 87, 93, 349? A) Lakhs. B) Thousands. C) Ten lakhs. D) None of the above. Show Answer Correct Answer: C) Ten lakhs. 17. The decimal expansion of 7/20 is: A) Terminating. B) Non-terminating recurring. C) Non-terminating non-recurring. D) None of these. Show Answer Correct Answer: A) Terminating. 18. The difference of 111-001 equals ..... A) 100. B) 111. C) 001. D) 110. Show Answer Correct Answer: D) 110. 19. The number system we use from our childhood is decimal number system. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 20. What is the absolute value of-14 degrees Celsius? A) 14. B) -14. C) All the above. D) None of the above. Show Answer Correct Answer: A) 14. 21. Which set of numbers is denoted by the letter 'Z'? A) Natural numbers. B) Whole numbers. C) Rational numbers. D) Integers. Show Answer Correct Answer: D) Integers. 22. Which of the following is not a positional number system? A) Binary. B) Decimal. C) Octal. D) Roman. Show Answer Correct Answer: D) Roman. 23. Identify the type of decimal expansion for 7/8. A) Terminating. B) Non-terminating repeating. C) Non-terminating non-repeating. D) Irrational. Show Answer Correct Answer: A) Terminating. 24. $15\sqrt{15}\div3\sqrt{3}=$ A) $5\sqrt{3}$. B) $3\sqrt{5}$. C) $5\sqrt{5}$. D) $3\sqrt{3}$. Show Answer Correct Answer: C) $5\sqrt{5}$. 25. Compare:-3 ..... 5 A) -3 >-5. B) -3 =-5. C) -3 <-5. D) None of the above. Show Answer Correct Answer: A) -3 >-5. ← 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