Question:
The statement among the following that is a tautology is:
Correct Option: , 4
Solution:
$A \wedge(\sim A \vee B) \rightarrow B$
$=[(A \wedge \sim A) \vee(A \wedge B)] \rightarrow B$
$=(A \wedge B) \rightarrow B$
$=\sim A \vee \sim B \vee B$
$=t$
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