Knockout JEE Main April 2021 (One Month)
An exhaustive E-learning program for the complete preparation of JEE Main..
₹ 14000/-
₹ 6999/-
Buy Now
negation of the Boolean expression
= 
Applying De morgans law,
=
Using double negation law and distributive law
=>
Contradiction
=>
So, option (4) is correct.
Option 1)
Option 2)
r
Option 3)
Option 4)