In this question, two statements are given, followed by two conclusions numbered I and II. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusion(s) logically follows/follow from the statements.
Statements:
All stones are pebbles.
Some stones are gems.
Conclusions:
I. All gems are pebbles.
II. Some pebbles are stones.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. Only conclusion II follows.
The least possible venn diagram is:

Conclusions:
I. All gems are pebbles. → Does not follow (It is possible but not definite)
II. Some pebbles are stones.→ Follows (As all stones are pebbles. So, some pebbles are also stones.)