Teaching UGC NET Mock Test Series 2025 (Paper 1 & 2) Engineering Mathematics Mathematical Logic Propositional Equivalence

Let P and Q be two propositions, ¬ (P ↔ Q) is equivalent to:

1
P ↔ ¬ Q
2
¬ P  → Q
3
¬ P ↔ ¬ Q
4
Q → P
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