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Home › Computer › Number Systems - Binary Arithmetic

Number Systems - Binary Arithmetic — Computer Questions & Practice

Practise 350 Number Systems - Binary Arithmetic questions from Computer for competitive exams such as UPSC, Banking, SSC and Railway. Read the worked questions below, check every answer with an explanation, and track what you get wrong.

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Practice questions on Number Systems - Binary Arithmetic — with answers

Try each question first, then open the answer. Explanations are included.

1. Add the binary equivalents of decimal 104 and decimal 79, and express the result in binary.

  1. A10110110
  2. B10110111
  3. C11010001001111
  4. D10111000
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Answer: B

104 + 79 = 183 in decimal = 10110111 in binary.

2. Add the binary equivalents of decimal 79 and decimal 151, and express the result in binary.

  1. A11100110
  2. B11100111
  3. C100111110010111
  4. D11100101
Show answer

Answer: A

79 + 151 = 230 in decimal = 11100110 in binary.

3. Add the binary equivalents of decimal 64 and decimal 12, and express the result in binary.

  1. A1001011
  2. B1001101
  3. C10000001100
  4. D1001100
Show answer

Answer: D

64 + 12 = 76 in decimal = 1001100 in binary.

4. Add the binary equivalents of decimal 91 and decimal 70, and express the result in binary.

  1. A10100001
  2. B10110111000110
  3. C10100000
  4. D10100010
Show answer

Answer: A

91 + 70 = 161 in decimal = 10100001 in binary.

5. Add the binary equivalents of decimal 18 and decimal 107, and express the result in binary.

  1. A1111110
  2. B100101101011
  3. C1111101
  4. D1111100
Show answer

Answer: C

18 + 107 = 125 in decimal = 1111101 in binary.

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