Q106 / 150 · MHT CET 2025 (25 Apr Shift 2) · Physics

One of the following values of inputs $\mathrm{A}, \mathrm{B}$ and C respectively gives output $(\mathrm{Y})$ of the following combination of logic gates as ' 1 ' is Figure

  • A
    0,0,0
  • B
    0,1,0
  • C
    1,0,0
  • Correct answer
    D
    1,0,1

Solution

The circuit's output $Y$ represents the logical AND of input $A$ with the OR of inputs $B$ and $C$, expressed as $Y = A \cdot (B + C)$.

For $Y$ to be $1$, both conditions $A = 1$ and $B + C = 1$ must hold true. The OR condition $B + C = 1$ requires at least one of $B$ or $C$ to be $1$.

Evaluating the options: only choice D, with $A=1$, $B=0$, $C=1$, satisfies both $A = 1$ and $B + C = 1$ since $0 + 1 = 1$, leading to $Y = 1 \cdot 1 = 1$.

The correct input combination is $\boxed{\text{D}}$.

Hence, the correct answer is option: 'D'.

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