Logical Reasoning - Logical Deduction - Discussion

Discussion Forum : Logical Deduction - Section 1 (Q.No. 39)
Directions to Solve

In each question below are given two statements followed by two conclusions numbered I and II. You have to take the given two statements to be true even if they seem to be at variance from commonly known facts. Read the conclusion and then decide which of the given conclusions logically follows from the two given statements, disregarding commonly known facts.

Give answer:

  • (A) If only conclusion I follows
  • (B) If only conclusion II follows
  • (C) If either I or II follows
  • (D) If neither I nor II follows and
  • (E) If both I and II follow.


39.

Statements: Some books are tables. Some tables are mirrors.

Conclusions:

  1. Some mirrors are books.
  2. No book is mirror.
Only conclusion I follows
Only conclusion II follows
Either I or II follows
Neither I nor II follows
Both I and II follow
Answer: Option
Explanation:
Since both the premises are particular no definite conclusion follows. However, I and II involve only the extreme terms and form a complementary pair. Thus, either I or II follows.
Discussion:
16 comments Page 2 of 2.

Trishul said:   1 decade ago
Answer should be D.

From the given premise two extremes can be drawn:

Some books are mirrors.
No book is mirror.

But in the question it is given 'some mirror are books' which is NOT a converse of 'some book are mirror'.

Maimuna ambareen said:   1 decade ago
Since both premises are particular the conclusion does not follow. If I am wrong please correct me. I have written test scheduled this week.

Saurabh said:   1 decade ago
It should be D because if both the statements include some then no conclusion can be made.

Phani said:   1 decade ago
Can you explain this properly because I got "D" according to venn diagrams so how could it be "C".

Sanyam said:   1 decade ago
Option D is correct by Venn diagram also...

Muthu said:   1 decade ago
When should either be chosen? I think option D is correct.


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