ISRO | ISRO CS 2016 | Question 14

Which of the following binary number is the same as its 2’s complement?
(A) 1010
(B) 0101
(C) 1000
(D) 1001

Answer: (C)
Explanation: Option (A): 2’s complement of 1010 = 0101 + 1 = 0110
Option (B): 2’S complement of 0101 = 1010 + 1 = 1011
Option (C): 2’s complement of 1000 = 0111 + 1 = 1000
Option (D): 2’s complement of 1001 = 0110 + 1 = 0111
So, option (C) is correct.
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