Some chairs are tables — Syllogisms Aptitude Question
Some chairs are tables: Statements: Some chairs are tables. All tables are wooden. Conclusions: I. Answer and worked solution on CodeKairo.
- Topic: Syllogisms
- Section: Logical Reasoning
- Difficulty: Medium
- Time target: 60 seconds
Question
Statements:
- Some chairs are tables.
- All tables are wooden.
Conclusions: I. Some chairs are wooden. II. All wooden things are tables.
Which conclusion follows?
Options
- Only I
- Only II
- Both
- Neither
Show the answer and the worked solution
Correct answer: A. Only I
Worked solution
- Some chairs are tables and all tables are wooden, so those chairs are wooden: I follows.
- II reverses statement 2 and does not follow.
Answer: Only I.
The idea
'Some A are B' plus 'all B are C' always yields 'some A are C'. Nothing stronger and nothing reversed.
Shortcut. Some + all, with the shared term (tables) ending the first premise and starting the second, always yields 'some' between the outer terms: some chairs are wooden. II swaps the terms of an 'all', which is never allowed.
Common trap. "Both" — reading II as statement 2 said another way; 'all tables are wooden' leaves room for wooden doors and chairs that are not tables.