Directions: Two statements are given, followed by two conclusions numbered I and II. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements.
Statements:
Some classes are theories.
Some theories are lessons.
Conclusions:
I. All classes can never be lessons.
II. All theories being classes is a possibility.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. Only conclusion II follows.
The least possible Venn Diagram for the given statements is drawn below:

Conclusions:
I. All classes can never be lessons → False (It is possible, but no definite conclusion can be drawn.)
II. All theories being classes is a possibility → True (As some classes are theories so, all theories being class is possible.)
Hence, Only conclusion II follows.