Logic circuits

Which is the decimal number 13 in binary?

  1. A1011
  2. B1101
  3. C1110
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Answer: B. 1101

13 = 8 + 4 + 1, so in binary the 8s, 4s and 1s places are 1, giving 1101. 1011 is 11 and 1110 is 14.

  • A. 1011 is 8 + 2 + 1 = 11.
  • B. Correct. 8 + 4 + 1 = 13.
  • C. 1110 is 8 + 4 + 2 = 14.
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