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:
- Some mirrors are books.
- No book is mirror.
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 1 of 2.
Muthu said:
1 decade ago
When should either be chosen? I think option D is correct.
Sanyam said:
1 decade ago
Option D is correct by Venn diagram also...
Phani said:
1 decade ago
Can you explain this properly because I got "D" according to venn diagrams so how could it be "C".
Saurabh said:
1 decade ago
It should be D because if both the statements include some then no conclusion can be made.
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.
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'.
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'.
Add said:
1 decade ago
Answer C is correct because depending on how you draw your venn diagram, either 1 or 2 can be correct, but not at the same time.
(1)
Jyoti said:
10 years ago
Can someone please explain with a venn diagram how is the answer C ?
Yash said:
10 years ago
The correct answer is C. The logic is simple. Some books are tables, and some tables are mirrors right. So either some mirrors can be books or no mirror can be books.
(1)
K.N.Jayanth Krishnamoorthy said:
9 years ago
In my opinion, D is the correct answer. Please tell me where I am going wrong. My bone of contention, is as follows:
Some books are tables. Some tables are mirrors.
Taking the 1st statement, it can be deduced that some books are tables. Therefore all tables are books.
Similarly, in the 2nd statement, it can be deduced that some tables are mirrors. Therefore, all mirrors are tables.
The choices given are: some mirrors are books; no book is mirror. Both of these conclusions cannot be drawn and hence D is the answer.
Can someone please explain why am I wrong?
Some books are tables. Some tables are mirrors.
Taking the 1st statement, it can be deduced that some books are tables. Therefore all tables are books.
Similarly, in the 2nd statement, it can be deduced that some tables are mirrors. Therefore, all mirrors are tables.
The choices given are: some mirrors are books; no book is mirror. Both of these conclusions cannot be drawn and hence D is the answer.
Can someone please explain why am I wrong?
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