Exam

English and Logical Reasoning Prep Guide

Subject

Logical Reasoning

Chapter

Logical Deduction

English and Logical Reasoning Prep Guide · Logical Reasoning · Logical Deduction

Question : Directions: In each question below there are given some...

Question : Directions: In each question below there are given some statements followed by some conclusions. You have to take the given statements to be true even if they seem to be at variance with commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows/follow from the given statements, disregarding commonly known facts.

Statements:

No newspaper is magazine.

Not a single magazine is book.

Every book is story.

Conclusions:

I. Some stories which are books are newspapers as well.

II. No newspaper is a book.

III. Some stories are not magazines.

Step-by-step solution

Analytical Method:

Checking C1:
Some stories& which are books are newspapers as well.
If we observe the given statements, we can find that in Statement 1 and 2, the middle term ‘magazine’ is distributed twice and therefore even after conversing either of the sentence we won’t be able to find a definite conclusion out of these two. Therefore, we can’t derive a definite relationship between ‘book’ and ‘newspaper’.
C1 hence doesn’t follow.

Checking C2:
No newspaper is a book.
Following the logic explained above, we can clearly say that C2 doesn’t follow either.

Checking C3:
Some stories& are not magazines.
From S2 and S3,
Not a single magazine is book (E) + Every book is story (A) = Some stories& are not magazines.
Clearly, C3 follows.

Among all, only C3 follows. Option A is hence the correct answer.