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No Stupid Questions@lemmy.world · 5 months ago

Is "If A then B" equal to "B if and only if A"?

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Is "If A then B" equal to "B if and only if A"?

Lafari@lemmy.world to

No Stupid Questions@lemmy.world · 5 months ago

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Boinkage@lemmy.world
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5 months 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
- XeroxCool@lemmy.world
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  5 months ago
  That’s a key detail I now see

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