Question

Assume the statements to be true even if they seem to be at variance from the commonly known facts. Then decide which of the given conclusions follows from the given statements.

Statements:
All models are fashion designers.
All youtubers are models.

Conclusions:
I. All youtubers are fashion designers.
II. Some models are youtubers.

• A. Only conclusion I follows
• B. Only conclusion II follows
• C. Neither conclusion I nor II follows
• D. Both conclusions I and II follow

Answer 1

The Correct Option is D

Concept:

• Chain rule: if "All A are B" and "All C are A", then "All C are B" follows.
• Conversion rule: a universal statement "All A are B" always allows the particular statement "Some B are A" to be drawn.

Step 1: Write down the given statements.
All models are fashion designers.
All youtubers are models.

Step 2: Test Conclusion I: All youtubers are fashion designers.
Since every youtuber is a model, and every model is a fashion designer, every youtuber must be a fashion designer.
Conclusion I follows by the chain rule.

Step 3: Test Conclusion II: Some models are youtubers.
"All youtubers are models" is a universal statement, and converting it gives "Some models are youtubers".
This conversion is always valid, so Conclusion II also follows.

Step 4: Combine both results.
Both conclusions are logically forced by the given statements, so both hold together.

Final Answer: Both conclusions I and II follow (option 4)