Question:
Four NOR gates are connected as shown in figure.
The truth table for the given figure is :
Correct Option: , 4
Solution:
$y=\overline{(\overline{A+\overline{A+B}})+(\overline{B+\overline{A+B})}}$
$\mathrm{y}=(\mathrm{A}+\overline{\mathrm{A}+\mathrm{B}}) \cdot(\mathrm{B}+\overline{\mathrm{A}+\mathrm{B}})$
Ans. 4
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