Q. To get output '1' at R, for the given logic gate circuit the input values must be :

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Solution:

$p =\bar{x} +y $
$ Q = \overline{\bar{y} .x} = y + \bar{x} $
$O/ P = \overline{P + Q}$
To make O/P
P + Q must be 'O'
SO, y = 0 , x = 1

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