How many minimum NOR gates with fan-in 2 are required to implement (A+B+C)' ?

Answer: 3 — NOT- AND is equivalent to NOR. Eg: x'y'= (x+y)'NOR gate with same inputs behaves as NOT. Eg: (x+x)' =x' Hence, (A+B+C)’ can be implemented with 3 NOR Gates.

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Correct answer: 3

NOT- AND is equivalent to NOR. Eg: x'y'= (x+y)'NOR gate with same inputs behaves as NOT. Eg: (x+x)' =x'

Hence, (A+B+C)’ can be implemented with 3 NOR Gates.