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 cards are postcards.
Some postcards are books.
All books are novels.
Conclusions:
I. Some postcards are novels.
II. No card is a book.
III. All cards are novels.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. Only conclusion I follows.
The least possible Venn diagram:
Conclusions:
I. Some postcards are novels. - Follows (because Some postcards are books and All books are novels. So, Some postcards are also novels)
II. No card is a book. - Does not follow (because there is no direct relation between card and book)
III. All cards are novels. - Does not follow (because there is no direct relation between card and novels)