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
141. In even parity, the sum of the individual bits in the code group must be even.
- TRUE
- FALSE
142. Adding an odd-parity bit to ASCII hex code 2B results in 10101011.
- TRUE
- FALSE
143. Octal-to-binary conversion is accomplished by simply replacing each octal digit with its 4-bit binary equivalent.
- TRUE
- FALSE
145. Manufacturers of computers utilize 3-bit codes to indicate operations or instructions.
- TRUE
- FALSE