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 police officer is a doctor.
Some doctors are specialists.
All engineers are doctors.
Conclusions:
I. Some engineers are police officers.
II. No engineer is a police officer.
III. Some doctors are engineers.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. Only conclusions II and III follow.
The least possible Venn Diagram for the given statements is drawn below:
Conclusions:
I. Some engineers are police officers → False (It is possible, but no definite conclusion can be drawn.)
II. No engineer is a police officer→ True (As all engineers are doctors, and no police officer is a doctor, so, no engineer is a police officer.)
III. Some doctors are engineers→ True (As all engineers are doctors, so, some doctors are engineers.)