\( Therefore,\,\,a \,\,pine\,\,is\,\,a\,\,plant.\)
\(Some\,\,trees\,\,have\,\,cones.\)The above argument is valid and sound because the premises are true and the logic makes sense.
\(A\,\,maple\,\,is\,\,a\,\,tree \)
\(Therefore,\\,a\,\,maple\,\,has\,\,cones.\)
\(Potatoes\,\,existed\,\, in\,\, Europe\,\, around\,\, 1300.\)The above argument is invalid and unsound because despite true premises, the logic leads to a false conclusion.
Well, some trees have cones, but maples do not.
\(Cabbage\,\, existed\,\, in\,\, Europe\,\, around\,\, 1300.\)
\(People\,\, in\,\ Europe\,\, had \,\,eaten \,\,potatoes\,\, and\,\, cabbage\,\, around \,\,the \,\,year \,\,1300.\)
The argument is valid because of the logic, but unsound due to the false premise of pototes existing in Europe in 1300. In fact. Pototes were found at the time only in South America which had no contact with Europe.
