General Studies · Syllogism

Two statements are given, followed by three conclusions numbered I, II, and III. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements. Statements: No fish is a pen. All keys are pens. Conclusions: I. No key is a fish. II. No pen is a key. III. Some pens are keys.