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Question
If p → q is an implication, then the implication ∼ q → ∼ p is called its
Options
Converse
Contrapositive
Inverse
Alternative
Solution
Contrapositive
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Using truth table prove that:
~ (p `leftrightarrow` q) ≡ (p ∧ ~ q) ∨ (q ∧ ~ p)
