Exam-style question
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What is the range of values that can be represented using 6-bit two’s complement?.
- A.-31 to 32
- B.-32 to 31
- C.0 to 63
- D.-63 to 63
Model answer
What a good answer should say
- -32 to 31
Explanation
Why this works
For n bits, the range is -2^(n-1) to 2^(n-1) - 1. For 6 bits, this is -32 to 31.
Common mistake
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