Logical Reasoning - Logical Deduction - Discussion

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

3. 

Statements: Some pictures are frames. Some frames are idols. All idols are curtains.

Conclusions:

  1. Some curtains are pictures.
  2. Some curtains are frames.
  3. Some idols are frames.

[A]. Only I and II follow
[B]. Only II and III follow
[C]. Only I and III follow
[D]. All follow
[E]. None of these

Answer: Option B

Explanation:

III is the converse of the second premise and so it holds.

Some pictures are frames. Some frames are idols.

Since both the premises are particular, no definite conclusion follows.

Some frames are idols. All idols are curtains.

Since one premise is particular, the conclusion must be particular and should not contain the middle term. So, it follows that 'Some frames are curtains'. III is the converse of this conclusion and so it holds.

Some pictures are frames. Some frames are curtains.

Since both the premises are particular, no definite conclusion can be drawn.


Lisa said: (Jul 20, 2015)  
III. Some idols are curtains.

The statement clearly says "All idols are curtains". So how are some idols are frames? when all idols are curtains.

Himanshi said: (Dec 3, 2016)  
B is correct since some frames are idols can be converse and also some frames are idols and all idols are curtains gives the result of || so B is true.

Alex said: (Apr 5, 2019)  
Why the I is not correct?

All idols are curtains. so, some curtains are idols.
Some frames are idols. so, some idols are frames. thus, some curtains are frames
Some pictures are frames. so, some frames are pictures. thus, some curtains are pictures.

Therefore it should be a correct answer too.
Please, explain if I am wrong.

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