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:
Some locks are keys.
No key is a chain.
All springs are chains.
Conclusions:
I. Some keys are springs.
II. No key is a spring.
III. No lock is a spring.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. Only conclusion II follows.
The least possible Venn Diagram for the given statements is drawn below:
Conclusions:
I. Some keys are springs → False (It is possible, but no definite conclusion can be drawn).
II. No key is a spring → True (As some locks are keys, no key is a chain, and all springs are chains then no key is a spring is true).
III. No lock is a spring → False (It is possible, but no definite conclusion can be drawn).