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
112. Digital systems operate only on discrete digits that represent numbers, letters, or symbols.
- TRUE
- FALSE
115. ASCII stands for American Standard Code for Information Interchange.
- TRUE
- FALSE
116. When converting from decimal to binary by the repeated division-by-two method, the initial remainder becomes the MSD.
- TRUE
- FALSE
117. When converting from decimal to binary by the repeated division-by-two method, the initial remainder becomes the MSD. 3C1D16 = 111100000111012
- TRUE
- FALSE
118. Zeros may be added to the left of the MSB to produce even groups of 4 bits when converting from binary to hexadecimal.
- TRUE
- FALSE
119. Digital electronics must use a numbering system that has more than ten digits.
- TRUE
- FALSE
120. A debugging utility is used to take the "bugs" out of a program.
- TRUE
- FALSE