Question

In Boolean algebra if A = 1 and B = 0, then the value of $A + \bar{B}$ is.

• A. A
• B. A.N
• C. A + B
• D. Both (1) and (3)

Answer 1

Answer: (D)

Both (1) and (3)

Answer 2

: here, $A = 1,B = 0,$ then $A + \bar{B} = 1 + \bar{0} = 1 + 1 = 1$

$\therefore A + B = 1 + 0 = 1$

But$B = 0$and $A.B = 1.0 = 0$