Question 309832
Determine if the argument is valid or invalid. 
If it is cold, then you need a coat. 
You do not need a coat.
It is not cold. 
* Valid by the law of detachment
* Valid by the law of contraposition
*Invalid by fallacy of the converse
* Invalid by fallacy of the inverse
* Valid by the law of syllogism
* Valid by disjunctive syllogism 
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Something you need to know.
If "p implies q" is true, the converse "not q implies not p" is a false
conclusion.
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The argument above is invalid by fallacy of the converse.
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Cheers,
Stan H.