▲ 40 ▼ Is "If A then B" equal to "B if and only if A"? (lemmy.world) submitted 2 years ago by Lafari@lemmy.world to c/nostupidquestions@lemmy.world 60 comments fedilink hide all child comments
[–] Boinkage@lemmy.world 9 points 2 years ago* (1 child) 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 permalink fedilink source parent hideshow 2 child comments replies: [–] XeroxCool@lemmy.world 2 points 2 years ago That's a key detail I now see permalink fedilink source parent
[–] XeroxCool@lemmy.world 2 points 2 years ago That's a key detail I now see permalink fedilink source parent