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Reported Question / Answer
Q.) One way to make a four-bit adder perform subtraction is by:
1)
inverting the carry-in.
2)
inverting the output.
3)
grounding the B inputs.
4)
inverting the B inputs
5)
NULL
Answer :
4
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Message / Correct Answer / Suggestion
Human Verification : Answer 2 + 3 = ?
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