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 gems are stones.
Some gems are rocks.
All rocks are diamonds.
Conclusions:
I. Some diamonds are rocks.
II. Some stones are rocks.
III. Some gems are diamonds.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. Only conclusions I and III follow.
Conclusions:
I. Some diamonds are rocks. - Follows (because All rocks are diamonds given)
II. Some stones are rocks. - Does not follow (it is possible but not definite)
III. Some gems are diamonds. - Follows (because Some gems are rocks and All rocks are diamonds. So, Some gems are diamonds too)