Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements.
Statements:
No introvert is an extrovert.
All extroverts are ambiverts.
Conclusions:
I. No introvert is an ambivert.
II. No ambivert is an introvert.
III. Some ambiverts are extroverts.
IV. All ambiverts are extroverts.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. Only conclusion III follows.
The least possible Venn Diagram for the given statements is drawn below:
Conclusions:
I. No introvert is an ambivert → False (It is possible but no definite conclusion can be drawn).
II. No ambivert is an introvert → False (It is possible but no definite conclusion can be drawn).
III. Some ambiverts are extroverts → True (All extroverts are ambiverts, so, we can say that some extroverts are ambiverts).
IV. All ambiverts are extroverts → False (It is possible but no definite conclusion can be drawn).
Hence, Only conclusion III follows.