Exam-style question
Try this first
Which 8-bit two’s complement pattern represents -13?.
- A.00001101
- B.11110010
- C.11110011
- D.10001101
Model answer
What a good answer should say
- 11110011
Explanation
Why this works
Write +13 as 00001101, invert the bits to get 11110010, then add 1 to obtain 11110011.
Common mistake
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