Question

Statements: No book is a pen. All pens are pencils. Conclusions: I. Some pencils are not books. II. No book is a pencil. Which conclusion follows?

• A. Both I and II follow
• B. Only conclusion I follows
• C. Only conclusion II follows
• D. Neither I nor II follows

Hint:

Pens are pencils that cannot be books, but other pencils are unconstrained.

Answer 1

The Correct Option is B

Place the pens circle inside pencils and fully outside books. That guaranteed pen region is pencil-but-not-book, so I is true. Nothing stops the rest of the pencils circle from touching books, so II is not guaranteed. Only I follows.