Determine whether B is the inverse of A.
-A =
A) Yes
B) No

Question

Determine whether B is the inverse of A.
-A = 
A) Yes 
B) No

Quizplus · Accepted Answer

In order for B to be the inverse of A, it must satisfy the following conditions:
1. B and A must be of the same length
2. The bitwise XOR of A and B must equal the all-ones value (i.e. each bit position in A must be flipped to the opposite value in B)

In this case, B is not the same length as A (it has one less digit), so it cannot be the inverse of A. It is not possible to determine whether B is the inverse of A without knowing what B is. The given information only provides us with the value of A, but we do not have any information about B to compare it with A. Thus, the answer is No.

Determine Whether B Is the Inverse of A