Question

The 2's complement of 10.11 :

(a) 10

(b) 0.010

(c) 01.01

(d) 10.01

Answer 1

Correct answer is (a) 10

Easiest explanation: The 1’s complement of a number is obtained by reversing the bits with value 1 to 0 and the bits with value 0 to 1.  Here, 10.11 gets converted to 01.00 in its 1’s complement format. Further, to convert 1’s complement into 2’s, we add 1 to the result.  Here, 01.00+1=10.00.