Multiple choice Which of these binary numbers is same as its 2's compliment? 11111110 11111111 10000000 10101001 10101010 Reveal answer Fill a bubble to check yourself C Correct answer Explanation The 1's complement of 10000000 is 01111111, adding 1 to it, gives 10000000 as its 2's complement. This is the same as the given number.