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Which one of the following Boolean expressions is a tautology?
(1) $(p \wedge q) \vee (p \wedge \sim q)$
(2) $(p \vee q) \vee (p \vee \sim q)$
(3) $(p \vee q) \wedge (p \vee \sim q)$
(4) $(p \vee q) \wedge (\sim p \vee \sim q)$
Type: MCQ
$(p \vee q) \vee (p \vee \sim q) = p \vee (q \vee \sim q) = p \vee T = T$
BETA
