alleryStart learning →Rewriting 'p if and only if q' using implications gives
A(p → q) ∨ (q → p)
B(p → q) ∧ (q → p)
C(p ∧ q) → p
Dp → (q ∧ p)
Answer & Solution
Correct answer: B. (p → q) ∧ (q → p)
'If and only if' means implication in both directions, joined by 'and'.
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