This quiz works best with JavaScript enabled. Home > Class 9 > Class 9 Maths Chapter 1 Number Systems – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 9 Maths Chapter 1 Number Systems Quiz 4 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the base of the hexadecimal number system? A) 10. B) 6. C) 16. D) 8. Show Answer Correct Answer: C) 16. 2. Joe went scuba diving. He descended down to 5 feet below sea level, stopped, then went down another 20 feet. What is Joe's level? A) 25 feet. B) -15 feet. C) 15 feet. D) -25 feet. Show Answer Correct Answer: D) -25 feet. 3. GOKUL, DAVID, and JOHN are planning a party and need to find the least common multiple of the number of balloons they each have:5, 10, and 15. A) 25. B) 15. C) 35. D) 30. Show Answer Correct Answer: D) 30. 4. What is the binary representation of the decimal number 13? A) 1101. B) 1011. C) 1110. D) 1001. Show Answer Correct Answer: A) 1101. 5. There are 4 positive charges and 5 negative charges. Which integerrepresents the total value of the charges? A) 9. B) -9. C) 1. D) -1. Show Answer Correct Answer: D) -1. 6. Which of the following is a rational number between 15 and 16? A) $\frac{63}{4}$. B) $\frac{15}{2}$. C) $\frac{16}{2}$. D) $\frac{31}{5}$. Show Answer Correct Answer: A) $\frac{63}{4}$. 7. Find the binary of 1E A) 00101110. B) 01001000. C) 00011110. D) 10011100. Show Answer Correct Answer: C) 00011110. 8. Convert the following binary number to octal.010111100 A) 172. B) 272. C) 174. D) 274. Show Answer Correct Answer: D) 274. 9. Davis earned $ 36.12 for making 7 touchdowns at his football game. How much does he make per touchdown? A) $ 5.17. B) $ 5.12. C) $ 5.14. D) $ 5.16. Show Answer Correct Answer: D) $ 5.16. 10. Rationalize the denominator:$\frac{\sqrt{5}}{2\sqrt{3}}$ A) $\frac{\sqrt{15}}{6}$. B) $\frac{\sqrt{15}}{18}$. C) $\frac{5\sqrt{3}}{6}$. D) $\frac{5\sqrt{3}}{18}$. Show Answer Correct Answer: A) $\frac{\sqrt{15}}{6}$. 11. Write the decimal number of 1110 A) 14. B) 12. C) 10. D) 13. Show Answer Correct Answer: A) 14. 12. Oscar needs to ship 14 rocks CDs, 12 classical CDs, and 8 pop CDs. He can pack only one type of CD in each box and he must pack the same number of CDs in each box. What is the greatest number of CDs Oscar can pack in each box? A) 7. B) 1. C) 8. D) 2. Show Answer Correct Answer: D) 2. 13. The binary equivalent of 9 is A) 1101. B) 1000. C) 1110. D) 1001. Show Answer Correct Answer: D) 1001. 14. What is 3/8 as a decimal? A) 0.38. B) 2.666. C) 0.375. D) 0.425. Show Answer Correct Answer: C) 0.375. 15. The ASCII code is basically ..... bit code A) 5. B) 6. C) 7. D) 8. Show Answer Correct Answer: C) 7. 16. A repeating decimal or decimal that terminates is called a A) Natural Number. B) Irrational Number. C) Rational Number. D) Whole Number. Show Answer Correct Answer: C) Rational Number. 17. David and Nithin are friends whose ages are in the ratio 2:3. If David is 16 years old, how old is Nithin? A) 24. B) 30. C) 20. D) 18. Show Answer Correct Answer: A) 24. 18. Maya had 16 red flowers and 24 yellow flowers. She wants to make bouquets with the same number of each color flower in each bouquet. What is the greatest number of bouquets that she can make? A) 4. B) 2. C) 48. D) 8. Show Answer Correct Answer: D) 8. 19. What is the base of the octal number system? A) 2. B) 4. C) 6. D) 8. Show Answer Correct Answer: D) 8. 20. Calculate the LCM of 6 and 9. A) 18. B) 27. C) 36. D) 54. Show Answer Correct Answer: A) 18. 21. The school cafeteria serves tacos every sixth day and cheeseburgers every eight day. If tacos and cheeseburgers are both on today's menu, how many days will it be before they are both on the menu again? A) 14 days. B) 24 days. C) 34 days. D) 44 days. Show Answer Correct Answer: B) 24 days. 22. How could this number be identified? (Select ALL the correct options) $\frac{2}{3}$ A) Rational number. B) Integer. C) Whole number. D) Natural number. Show Answer Correct Answer: A) Rational number. 23. 2'S Complement of 1011 A) 0101. B) 0100. C) 1101. D) 0010. Show Answer Correct Answer: A) 0101. 24. Hexadecimal letters A through F are used for decimal equivalent values from: A) 1 through 6. B) 9 through 14. C) 10 through 15. D) 11 through 17. Show Answer Correct Answer: C) 10 through 15. 25. David and Prathap are working together to find the LCM of 8 and 14 for their math project. A) 56. B) 28. C) 48. D) 72. Show Answer Correct Answer: A) 56. ← 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 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 10Class 9 Maths Chapter 1 Number Systems Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books