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Q. Boolean output for $ABC\left(\bar{A} + \bar{B} + \bar{C}\right)$ is :-

NTA AbhyasNTA Abhyas 2020

Solution:

By $D-$ Morgan theorem
$\bar{A}+\bar{B}+\bar{C}=\bar{A B C}$
$ABC\left(\bar{A B C}\right)=0$