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# Write the logic operation for the below circuit :

$\begin{array}{1 1} OR \\ NOR \\ NAND \\ AND \end{array}$

$Y'= \overline{A+B}= \bar{A}. \bar{B}$
and $Y= \overline{\bar{A}.\bar{B}}$
$\qquad= \bar {\bar{A}}+\bar{\bar{B}}=A+B$