Which of the following pairs of propositions are not logically equival – McqOptions

MCQOPTIONS

1.	Which of the following pairs of propositions are not logically equivalent ?
A.	((p → r) ∧ (q → r)) and ((p ∨ q) → r)
B.	p ↔ q and (¬ p ↔ ¬ q)
C.	((p ∧ q) ∧ (¬ p ∧ ¬ q)) and p ↔ q
D.	((p ∧ q) → r ) and ((p → r) ∧ (q → r))
Answer» E.

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