#exclusive-or

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mediumAI-checkedKnowledge Representation & Reasoning

Which sentences are true exactly when one but not both of $A$ and $B$ is true (exclusive or)? Select all that apply.

$\lnot(A \leftrightarrow B)$ 1
$\lnot A \leftrightarrow \lnot B$ 2
$(A \lor B) \land \lnot(A \land B)$ 3
$A \leftrightarrow \lnot B$ 4
$(A \lor B) \land (\lnot A \lor B)$ 5

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