Question

Identify the set of three statements that are logically related.
A. Some buildings are not sky-scrappers.
B. Some sky-scrappers are not buildings.
C. No structure is a sky-scrapper.
D. All sky-scrappers are structures.
E. Some sky-scrappers are buildings.
F. Some structures are not buildings.

• A. ACE
• B. BDF
• C. CDE
• D. ACF

Hint:

When linking three statements, ensure they share terms in a way that allows direct or indirect inference without contradiction.

Answer 1

The Correct Option is B

B — "Some sky-scrappers are not buildings." — This is a particular negative statement about sky-scrappers and buildings.
D — "All sky-scrappers are structures." — This is a universal affirmative linking sky-scrappers to structures.
F — "Some structures are not buildings." — This is another particular negative statement that is logically compatible with B and D, since sky-scrappers are part of structures and can be distinct from buildings.
These three statements together create a coherent categorical relationship linking sky-scrappers, buildings, and structures.