Statements:
Some bangles are necklaces.
No necklace is a ring.
Only a few rings are anklets.
All anklets are earrings.
Conclusions:
I. No bangle is an earring.
II. Some earrings are rings.
III. Some anklets are not necklaces.
Some bangles are necklaces (I) + No necklace is a ring (E) → Some bangles are not rings (O) + Some rings are anklets (I) → No conclusion. Hence conclusion I does not follow. Some rings are anklets (I) + All anklets are earrings (A) → Some rings are earrings (I) → Conversion → Some earrings are rings (I). Hence conclusion II follows. No necklace is ring (E) + Some rings are anklets (I) → Some anklets are not necklaces (O*). Hence conclusion III follows