Syllogism · solved example
Statements: All pens are markers. All markers are inks. Conclusions: I. All pens are inks. II. Some inks are pens.
- Only conclusion I follows
- Only conclusion II follows
- Either I or II follows
- Neither I nor II follows
- Both I and II followCorrect
Solution
Pens sit inside markers, and markers inside inks, so every pen is an ink - conclusion I holds. Since all pens are inks, converting gives some inks are pens, so II holds too. Both follow.