Given the two hypotheses:
1. Some yaks are not blats and
2. No blats are blobs,
if “some” means “at least one,” we can conclude that:
- Some yaks are not blobs.
- Some blobs are not yaks.
- No yak is a blob.
- Some yaks are blobs.
- I, II, III, and IV are not deducible from the given statements.
Draw some Venn diagrams to show various possibilities. You’ll soon see that none of the statements I – IV necessarily follows from the two hypotheses. So the correct answer is V.