Number Systems

25 Questions

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Number System Quizzes & Trivia

Questions and Answers
  • 1. 
    What is the decimal value of the octal number 215? 
    • A. 

      327

    • B. 

      141

    • C. 

      97

    • D. 

      100

  • 2. 
    What is the decimal value of the hexadecimal number FF? 
    • A. 

      30

    • B. 

      255

    • C. 

      256

    • D. 

      250

  • 3. 
    Convert the sum of hexadecimal numbers 1F and 21A to binary
  • 4. 
    What is the result of the following hexadecimal arithmetic:EA9B + FFF6   
    • A. 

      EA91

    • B. 

      1EA91

    • C. 

      1FA91

    • D. 

      FA91

  • 5. 
    Convert the binary number 1011010 to hexadecimal.
  • 6. 
    What is the result when a decimal 5238 is converted to base 16?
  • 7. 
    What is the equivalent of the octal number 246 in base 10?
  • 8. 
    Digital electronics is based on the _________ numbering system.
    • A. 

      Decimal

    • B. 

      Hexadecimal

    • C. 

      Binary

    • D. 

      Octal

  • 9. 
    Convert 1101011011 (binary) to octal  
  • 10. 
    Convert 4321(decimal) to hexadecimal 
  • 11. 
    Find the sum of 1101012 and 10001112 and convert your result to decimal
  • 12. 
    1001001001 (binary) to octal _____________
  • 13. 
    • 745(octal) to hexadecimal _______________
  • 14. 
    5071(decimal) to hexadecimal ______________
  • 15. 
    AB5(hexadecimal) to decimal _______________
  • 16. 
    Find the sum of 1001012 and 11101012 and convert your result to decimal
  • 17. 
    1111001011 (binary) to octal _____________
  • 18. 
    667(octal) to hexadecimal _______________
  • 19. 
    4681(decimal) to hexadecimal ______________
  • 20. 
    • DA5(hexadecimal) to decimal _______________
  • 21. 
    Find the sum of 1111012 and 11001012 and convert your result to decimal
  • 22. 
    Evaluate the following Boolean expression:(0 + 1 + 0)(1 + 0 + 1)
  • 23. 
    What is the binary equivalent of the hexadecimal number ABC ? 
    • A. 

      101010111100

    • B. 

      10101011110

    • C. 

      000001111111

    • D. 

      100101111111

  • 24. 
    Computers use binary digits because ________
    • A. 

      Combinations of zeros and ones can represent any numbers and characters.

    • B. 

      Digital devices have only two stable states

    • C. 

      binary numbers are simple to manipulate

    • D. 

      Binary numbers are the bases upon which all other number systems are built.

  • 25. 
    1+1 in binary is_________________
    • A. 

      0 carry 1

    • B. 

      1 carry 1

    • C. 

      1 carry 0

    • D. 

      2 carry 0