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Prove, (AVB)[(¬A)(¬B)] is a contradiction.
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Solution:

 To Prove:- (AB)[(¬A)(¬B)] is a contradiction. 

ABAB¬A¬B(¬A)(¬B)(AB)[(¬A)(¬B)]TTTFFFFTFTFTFFFTTTFFFFFFTTTF

As we can see that the value of given expression ire.

(AB)[(¬A)(¬B)],

is False.

Hence, it is a contradiction. Aus.

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