This quiz works best with JavaScript enabled. Home > Class 9 > Class 9 Maths Chapter 1 Number Systems – Quiz 7 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 9 Maths Chapter 1 Number Systems Quiz 7 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following expressions represents a positive number? A) -4.5-(-5). B) -1/8 + (-5/8). C) 6.1 + (-6.2). D) -3/4-(-2/3). Show Answer Correct Answer: A) -4.5-(-5). 2. 9's complement of 25 is A) 64. B) 74. C) 84. D) 94. Show Answer Correct Answer: B) 74. 3. The sum of 11101 + 10111 equals ..... A) 110011. B) 100001. C) 110100. D) 100100. Show Answer Correct Answer: C) 110100. 4. Name the number system that best describes the situation.Time you spend at school. A) Whole Numbers. B) Integers. C) Real Numbers. D) Irrational Numbers. E) Rational Numbers. Show Answer Correct Answer: C) Real Numbers. 5. 6 ones, 3 hundreds, 6 thousands, 7 ten thousands, and 2 lakhs is ..... A) 2, 76, 306. B) 8, 53, 672. C) All the above. D) None of the above. Show Answer Correct Answer: A) 2, 76, 306. 6. Find the HCF of 48 and 64. A) 16. B) 12. C) 8. D) 24. Show Answer Correct Answer: A) 16. 7. Prathap and Asher have 24 and 36 apples respectively. Find the HCF of their apples. A) 18. B) 12. C) 6. D) 24. Show Answer Correct Answer: B) 12. 8. 10's complement of 25 is A) 85. B) 75. C) 95. D) 65. Show Answer Correct Answer: B) 75. 9. To which category does-6 belong? A) Integer Only. B) Integer and Whole #. C) Integer and Rational #. D) Whole #. Show Answer Correct Answer: C) Integer and Rational #. 10. In Mr. Snarey's class 8 out of 25 students are boys. What percentage of the class are GIRLS? A) 32%. B) 17%. C) 68%. D) 8%. Show Answer Correct Answer: C) 68%. 11. Rationalize the denominator of the expression. Assume that all variables are positive. $\frac{15\sqrt{60x^5}}{3\sqrt{12x}}$ A) $10x^2\sqrt{5}$. B) $5x^2\sqrt{5}$. C) $5x\sqrt{10}$. D) None of the above. Show Answer Correct Answer: B) $5x^2\sqrt{5}$. 12. Find the square root of 0.04. A) 0.4. B) 0.2. C) 0.04. D) 2. Show Answer Correct Answer: B) 0.2. 13. Which of the follwing is irrational? A) 0.14. B) $0.14\overline{16}$. C) $0.\overline{1416}$. D) 0.40140014000014 . Show Answer Correct Answer: D) 0.40140014000014 . 14. What is the GCF (Greatest Common Factor) of 12 and 6? A) 1. B) 6. C) 2. D) 3. Show Answer Correct Answer: B) 6. 15. There are ..... rational numbers between any two rational numbers. A) None. B) One. C) Two. D) Infinite. Show Answer Correct Answer: D) Infinite. 16. The binary addition 1 + 1 + 1 gives A) 111. B) 10. C) 110. D) 11. Show Answer Correct Answer: D) 11. 17. To which category does the number 4 belong? A) Rational # Only. B) Whole # Only. C) Integer Only. D) All of These. Show Answer Correct Answer: D) All of These. 18. Find the value of $\left(256\right)^{0.16\\}\times\left(256\right)^{0.09}$ A) 4. B) 16. C) 64. D) 256.25. Show Answer Correct Answer: A) 4. 19. The sum of a rational and an irrational number is: A) Always rational. B) Always irrational. C) Rational or irrational. D) None of these. Show Answer Correct Answer: B) Always irrational. 20. What is the product of 5.2 and 0.25? A) 1.3. B) 1.4. C) 5.45. D) 13.4. Show Answer Correct Answer: A) 1.3. 21. To which category does-2/5 belong? A) Rational # Only. B) Integer Only. C) Whole # Only. D) Integer & Rational. Show Answer Correct Answer: A) Rational # Only. 22. Simplify $\sqrt{125}\\times\sqrt{5}$ A) 5. B) 25. C) 35. D) 50. Show Answer Correct Answer: B) 25. 23. The elevation of the Salton Sea in California is given as-227 ft. What does this mean? A) 227 ft below sea level. B) 227 ft above sea level. C) -227 ft below sea level. D) -227 ft above sea level. Show Answer Correct Answer: A) 227 ft below sea level. 24. What is the sum of 2/3 and 1/4? A) 11/12. B) 5/12. C) 7/12. D) 3/4. Show Answer Correct Answer: A) 11/12. 25. Which of the following has a non-terminating and repeating decimal expansion? A) 2/11. B) 3/8. C) 5/2. D) 3. Show Answer Correct Answer: A) 2/11. ← 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 8Class 9 Maths Chapter 1 Number Systems Quiz 9Class 9 Maths Chapter 1 Number Systems Quiz 10Class 9 Maths Chapter 1 Number Systems Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books