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Are there any examples of such an argument? What would its premises be like? How could such an argument be possible?
Where an argument is logically valid "if and only if it is not possible for all the premises to e true and the conclusion false."
And logically false is defined as "if and only if it is not possible for the sentence to be true." (e.g. 'June will pass Chemistry 101 and she will not pass Chemistry 101').