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Needhelpp101
Group Title
Determine if the argument is valid or invalid. Give a reason to justify answer.
If it is cold, then you need a coat.
You do not need a coat.
∴ It is not cold.
 one year ago
 one year ago
Needhelpp101 Group Title
Determine if the argument is valid or invalid. Give a reason to justify answer. If it is cold, then you need a coat. You do not need a coat. ∴ It is not cold.
 one year ago
 one year ago

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zugzwang Group TitleBest ResponseYou've already chosen the best response.3
It's actually valid.
 one year ago

zugzwang Group TitleBest ResponseYou've already chosen the best response.3
TYPO lol if p then q not q therefore not p THIS is the valid one, sorry
 one year ago

zugzwang Group TitleBest ResponseYou've already chosen the best response.3
Modus Tollens*
 one year ago

Needhelpp101 Group TitleBest ResponseYou've already chosen the best response.0
thanks Guys :)
 one year ago

zugzwang Group TitleBest ResponseYou've already chosen the best response.3
okay, first, we start with p > q and ~q right?
 one year ago

zugzwang Group TitleBest ResponseYou've already chosen the best response.3
Well, what does it mean if p implies q? It means either p is false, or q is true, right? Because if p is not false, or p is true, it automatically implies q is true.
 one year ago

zugzwang Group TitleBest ResponseYou've already chosen the best response.3
So p is false or q is true. At least one of these must be true, right?
 one year ago

zugzwang Group TitleBest ResponseYou've already chosen the best response.3
But you also have the assumption q is false (You do not need a coat)
 one year ago

zugzwang Group TitleBest ResponseYou've already chosen the best response.3
p is false OR q is true. At lease one of these statements is true, and it's NOT the second statement, because we assumed q is false. Then it must be the case that the first statement is true (p is false) or (It is not cold)
 one year ago

Needhelpp101 Group TitleBest ResponseYou've already chosen the best response.0
ty Zug <3
 one year ago
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