Question 1
Statements:
All reliable are essential.
Some essential are useful.
No useful is a valuable.
Conclusions:
I. Some reliable are not valuable.
II. Some essential are not valuable.
III. No valuable is a useful.
Step-by-Step Analysis:
Statement 1: All reliable are essential → reliable inside essential
Statement 2: Some essential are useful → essential and useful overlap
Statement 3: No useful is a valuable → useful and valuable separate
Checking Conclusions:
✗ Conclusion I: "Some reliable are not valuable"
Cannot determine relationship between reliable and valuable - NOT PROVEN
✓ Conclusion II: "Some essential are not valuable"
Some essential are useful (given) + No useful is valuable (given)
Those essential which are useful cannot be valuable - FOLLOWS
✓ Conclusion III: "No valuable is a useful"
Conversion of "No useful is a valuable" - FOLLOWS
Answer: Conclusions II and III follow
Statement 1: All reliable are essential → reliable inside essential
Statement 2: Some essential are useful → essential and useful overlap
Statement 3: No useful is a valuable → useful and valuable separate
Checking Conclusions:
✗ Conclusion I: "Some reliable are not valuable"
Cannot determine relationship between reliable and valuable - NOT PROVEN
✓ Conclusion II: "Some essential are not valuable"
Some essential are useful (given) + No useful is valuable (given)
Those essential which are useful cannot be valuable - FOLLOWS
✓ Conclusion III: "No valuable is a useful"
Conversion of "No useful is a valuable" - FOLLOWS
Answer: Conclusions II and III follow