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:
All trojans are fairies.
No fairy is a flower.
All viruses are trojans.
Conclusions:
I. No flower is a trojan.
II. Some viruses are trojans.
III. No trojan is a virus.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. Only conclusions I and II follow.
The least possible Venn Diagram for the given statements is drawn below:
Conclusions:
I. No flower is a trojan → True (As trojans are fairies, and no fairy is a flower, so, no flower is a trojan is also true.)
II. Some viruses are trojans → True (As viruses are trojans, so, some viruses are trojans is also true.)
III. No trojan is a virus → False (It is possible, but no definite conclusion can be drawn.)
Hence, Only conclusions I and II follow.