• pruwyben
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      101 year ago

      You left out the “not” part - “If not pizza lunch, then not Tuesday” does indeed work.

    • @[email protected]
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      1 year ago

      Ya wrong.

      If Tuesday, then pizza. And, if Friday, then pizza.

      The contrapositive : if not pizza, then not Tuesday and not Friday.

      What day is it? We’re not having pizza. So it’s not Tuesday or Friday.

      Google contrapositives then holla back

    • Kogasa
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      51 year ago

      Using standard definitions from propositional logic they are equivalent.