Assume the statements are true.

Statements: All pearls are gems. All gems are stones. Some stones are rocks.

Conclusions:

I. Some rocks are pearls.

II. Some stones are pearls.

Explanation

1. 01

   Pearls are gems and gems are stones, so every pearl is a stone. Since pearls exist, some stones are pearls: II follows.

2. 02

   The stones that are rocks may all lie outside the pearl circle. I is not definite.

3. 03

   Only II follows.