Question

In each question below are either two or three statements followed by two conclusions I and II. You have to take the two or three given statements to be true and then decide which of the given conclusions logically follows from the three given statements, disregarding the commonly known facts.

Statements
Some documents are files.
No file is a folder.
All folders are envelopes.

Conclusions :
I. Some envelopes are folders.
II. Some documents are envelopes.

• A. Only conclusion I follows
• B. Only conclusion II follows
• C. Either conclusion I or conclusion II follows
• D. Neither conclusion I nor conclusion II follows
• E. Both conclusion I and conclusion II follow

Answer 1

The correct option is A Only conclusion I follows

Some documents are files.
No file is a folder.
$I+E\Rightarrow O$-type of conclusion
Some documents are not folders.
No file is a folder.
All folders are envelopes.
$I+E\Rightarrow O_1$-type of conclusion
Some envelopes are not files.
Conclusion I is the converse of the third premise.