# Logical Reasoning :: Syllogism Problems And Answers

4. Statements:
No books is a pen.
All pens are pencils
All pencils are erasers.
Conclusions:
I. All pens are erasers.
II. At least some erasers are pencils.

 A. If only conclusion I follows. B. If only conclusion II follows. C. If either conclusion I or conclusion II follows. D. If both conclusions I and II follows.

Explanation:
(i)  All pages are markers           --> Universal Affirmative (A - type).
(ii) Some fruits are apples          --> Particular Affirmative (I - type)
(iii)No book is a page                 --> Universal Negative (E - type).
(iv) Some books are  not pages --> Particular Negative (O - type).

All pens are pencils
All pencils are erasers.
A + A => A - type of Conclusion
"All pens are erasers."
This is conclusion I.
Conclusion II is Converse of the second Premise.

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