Logical Reasoning - Logical Deduction - Discussion

Discussion Forum : Logical Deduction - Section 1 (Q.No. 21)
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.


21.

Statements: All poles are guns. Some boats are not poles.

Conclusions:

  1. All guns are boats.
  2. Some boats are not guns.
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:
Clearly, the term 'guns' is distributed in both the conclusions without being distributed in any of the premises. So, neither conclusion follows.
Discussion:
23 comments Page 1 of 3.

Krishna said:   1 decade ago
Since all poles are guns and some boats are not poles, means some boats are not guns.

Rupam said:   1 decade ago
It's not necessary that if some boat's are not poles than it will not be gun. Conclusion can't be got.

Pranjal said:   1 decade ago
As it clearly says. All poles are guns. Means poles = guns.

Some boats are not poles. Means -.

Some boats are not guns. So option D is wrong.

Chaitu said:   1 decade ago
The Correct Answer is "Either I or II follows".

Think Once again.

Karan said:   1 decade ago
Poles = Guns.
Some Boats are Not Poles.

Hence,

Some boats are Not guns. (Using equation 1).
Where is the fault then. Only conclusion II follows.

According to me.

Millie said:   1 decade ago
I agree with supporters of Option B. The implication from statement II is that some boats are poles. Therefore some boats are guns.

Khal drogo said:   1 decade ago
1. Guns is the super set of poles.

2. Set{boats}! = set{poles} and neither boats can be the super set of poles, nor poles can be superset of boats.

From 1 & 2 its clear that boats cannot be the superset of guns, so conclusion I will not follow.

It is possible that some boats are not guns but it is also possible that all the boats are guns, as its not clear conclusion II will not follow.

Fitz said:   1 decade ago
@KhalDrogo.

As it is already mentioned that some boats are not poles and all the poles are guns, so on creating a venn-diagram of it, the portion acquired by the poles in the guns cannot be fully occupied by the boats.

Tommy said:   1 decade ago
Correct answer should be B! No doubt.

If "All guns are boats. " changes to "Some boats are guns" (they are not equal logically!) , then D is correct!

Malfoy said:   1 decade ago
It is stated that "All poles are guns. Some boats are not poles".

It can be also deduced that, some boats are poles and every poles is a gun. This implies that some boats are guns, thus also some boats are not guns. So the second conclusion follows. So I'll go with B.


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