Three statements are given, followed by three conclusions numbered I, II and III. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements.
Statements:
Some diamonds are stones.
Some stones are hard.
All hard are rocks.
Conclusions:
I. Some stones are diamonds.
II. All stones are hard.
III. Some hard are rocks.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. Only conclusions I and III follow.
Conclusions:
I. Some stones are diamonds. - Follows (because Some diamonds are stones. So, Some stones are diamonds too)
II. All stones are hard.- Does not follow (it is possible but not definite)
III. Some hard are rocks. - Follows (because All hard are rocks. So, Some hard are rocks too)