Question

The 1’s complement of 1111111110.101 is _______________

(a) 1.010

(b) 0000000000.010

(c) 1111111110.101

(d) 1.101

I had been asked this question in final exam.

This intriguing question originated from Complements topic in division Computer Arithmetic of Computer Fundamentals

Answer 1

Correct option is (a) 1.010

The best I can explain: 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, 11111111110.101 gets converted to 000000001.010 in its 1’s complement format.