Question

1's complement of 1001

• A. 0110
• B. 0111
• C. 1111
• D. 0101

Hint:

In the 1's complement system, simply invert all bits of the given binary number.

Answer 1

The Correct Option is A

Step 1: To find the 1's complement, flip each bit of the given binary number.


Step 2: The 1's complement of 1001 is 0110 (flip 1's to 0's and 0's to 1's).