Question
Statements: Some woods are tables. All
tables are teaks. No teak is a chair. Conclusions: I. Some woods are teaks. II. Some woods are not chairs. III. Some tables are not chairs. In each question below are given three statements followed by three conclusions numbered I, II and III. You have to take the two given statements to be true even if they seem to be at variance with commonly known facts and then decide which of the given conclusions logically follows from the two given statements, disregarding commonly known facts.Solution
Some woods are tables (I) + All tables are teaks (A) ⇒ Some woods are teaks (I) + No teak is a chair(E) ⇒ Some woods are not chairs(O) . Hence, conclusion I and II follows. All tables are teaks(A) + No teak is a chair(E) ⇒ No table is a chair(E) ⇒ Conversion ⇒ Some tables are not chairs(O). Hence, conclusion III follows. Alternate Method: Minimum possibility: 
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