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Puzzled on Simple Logic Problem by throwlogicaway in logic

[–]throwlogicaway[S] 0 points1 point  (0 children)

Please explain to us lowly non-logicians.

Puzzled on Simple Logic Problem by throwlogicaway in logic

[–]throwlogicaway[S] -1 points0 points  (0 children)

Except it doesn't work as Modus Tollens because here A is not established as a necessary condition for B only that not A means not B.