Question

To get an output $Y=1$ from the circuit shown, the input $A,B$ and $C$ must be respectively.

• A. $0,1,0$
• B. $1,0,0$
• C. $1,0,1$
• D. $1,1,0$

Answer 1

Answer: (C)

$1,0,1$

We have,
$X=(A+B)$
$Y=(A+B)C$
If $Y=1\Rightarrow C$ has to be $1$.
Only option (3) is possible.
$y=(1+0)\left(1\right)=1$