Three 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:
All folders are copies.
All books are folders.
No copy is a pen.
Conclusions:
I. No book is a pen.
II. All books are copies.
III. Some copies are books.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2, i.e., All conclusions follow.
Conclusions:
I. No book is a pen → Follows (No copy is a pen. All books are copies. So, no book is a pen)
II. All books are copies → Follows (All books are folders (Statement 2), and all folders are copies (Statement 1), so all books are copies.)
III. Some copies are books → Follows (All books are copies; some copies (those which are books) exist. So, some copies are books.)