Jellopudin
If p: All birds fly. What is ~ p?



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blurbendy
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the ~ means negation. So, what is the opposite of saying All birds fly?

Jellopudin
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No birds fly.

Jellopudin
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Right?

Jellopudin
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Because that's not a choice.

blurbendy
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Logically, I would write, There is no bird that can fly.

Jellopudin
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some birds fly
birds always walk
not all birds fly
none of the above

Jellopudin
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those are the choices

blurbendy
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It's either C or D. I would argue C, because you can just put "not" in front of a statement because then that represents the "~" symbol.

klimenkov
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There exist a bird, that cant fly.

Jellopudin
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Exactly @blurbendy