9 9 votes Which of the following binary number is the same as its $2's$ complement ? $1010$ $0101$ $1000$ $1001$ Digital Logic digital-logic number-representation isro2016 + – sourav. 13.9k views answer comment Share Follow Print See 1 comment 1 1 comment reply umanandh77 commented Dec 7, 2025 reply Follow flag Here, the key is to find the 2's complement of the binary as soon as possible , so , for example consider binary 101000 , we go from left to right , we copy every bit of 0's and 1's till first 1 , then invert all the bits then after ,result is 011000. So , looking at the opions , we can see only the option (C) satisfies . 0 0 replyShare Please log in or register to add a comment.
Best answer 16 16 votes a)1010 2's complement = 0110 b)0101 2's complement = 1011 c)1000 2's complement = 1000 d)1001 2's complement = 0111 Hence Option(c)1000 is the correct choice. LeenSharma answered Jul 3, 2016 • selected Jul 3, 2016 by ManojK LeenSharma comment Share Follow See all 5 Comments 5 5 Comments reply Show 2 previous comments Arjun commented Jul 4, 2016 reply Follow flag Positive number has same representation in 2's complement representation while negative numbers are represented in 2's complement form. But the question is asking for 2's complement of a number - not the representation in 2's complement. 8 8 replyShare Warrior commented Mar 31, 2017 reply Follow flag But the question is asking for 2's complement of a number - not the representation in 2's complement.. Nice point sir... 1 1 replyShare nocturnal123 commented Aug 21, 2020 reply Follow flag @Arjun @Warrior Please explain it a bit more -“But the question is asking for 2's complement of a number - not the representation in 2's complement..” 0 0 replyShare Please log in or register to add a comment.
7 7 votes answer is c)1000 sourav. answered Jul 3, 2016 sourav. comment Share Follow See 1 comment 1 1 comment reply ManojK commented Jul 3, 2016 reply Follow flag rt 1 1 replyShare Please log in or register to add a comment.
