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JEE Main 2021 (25 Jul, Shift 1) · Logic Gates

Logic Gates question from JEE Main 2021 (25 Jul, Shift 1)

Q131JEE Main 2021 · 25 JUL · SHIFT 1Medium

Logic Gates

Identify the logic operation carried out.

Figure

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Answer: (b)

  1. A NAND gate with both inputs joined acts as NOT, so the inputs to the NOR gate are Aˉ\bar{A} and Bˉ\bar{B}.
  2. Y=Aˉ+Bˉ‾=A⋅BY = \overline{\bar{A} + \bar{B}} = A \cdot B (De Morgan).
  3. So the answer is (b) AND.
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