Which of the following 4-bit numbers equals its 2’s complement?

2023

Answer: C. 1000 — Invert: 0111 Add 1: 0111 + 1 = 1000 (Equal to 1000)

1. A.

   1010

2. B.

   0101

3. C.

   1000

4. D.

   More than one of the above

5. E.

   None of the above

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