Number Systems and Codes Questions and Answers
Number Systems and Codes Questions with Answers form the foundation of digital electronics reasoning and aptitude exams. This topic includes binary, octal, decimal, and hexadecimal number conversions, along with coding systems like Gray, ASCII, and BCD. Competitive exams such as GATE, DRDO, and ISRO often test candidates’ logical understanding of number representation and digital computation. Practicing reasoning questions and answers with step-by-step solutions builds numerical reasoning and circuit analysis confidence. Each question is structured to test clarity on base conversions, weighted codes, and arithmetic operations. With these aptitude-based questions, you can easily master the numerical logic behind digital systems. Download the PDF and start your reasoning test practice online today.
Number Systems and Codes
33. The octal numbering system:
- simplifies tasks
- groups binary numbers in groups of 4
- saves time
- simplifies tasks and saves time
35. Convert the following octal number to binary. 768
- 1101112
- 1111102
- 1111002
- 1001112
38. When using even parity, where is the parity bit placed?
- Before the MSB
- After the LSB
- In the parity word
- After the odd parity bit