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
42. An analog signal has a range from 0 V to 5 V. What is the total number of analog possibilities within this range?
- 5
- 50
- 250
- infinite
43. Hexadecimal letters A through F are used for decimal equivalent values from:
- 1 through 6
- 9 through 14
- 10 through 15
- 11 through 17
44. Convert the following decimal number to 8-bit binary. 35
- 000100102
- 000100112
- 001000112
- 001000102
45. Convert the following hexadecimal number to binary. C916
- 101110012
- 101110112
- 100111002
- 110010012
48. What is the resultant binary of the decimal problem 49 + 01 = ?
- 01010101
- 00110101
- 00110010
- 00110001