question_answer

Direction: In the question, there given four statements followed by three conclusions numbered I, II and III. You have to take the given statements to be true even if they seem to be at variance from commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.

Statements :

Some books are tables.

No table is machine.

All machines are tents.

Some tents are walls.

Conclusions:

I. Some walls are books.

II. Some tents are tables.

III. No book is wall.

A)  None follows

B)  Only I follows

C)  Only II follows

D)  Only III follows

E)  Only either I or III follows

Correct Answer: E

Solution :

(i) All phones are chords \[\to \] Universal Affirmative (A-type).

(ii) Some chords are nets \[\to \] Particular Affirmative (I-type).

(iii) No table is machine \[\to \] Universal Negative (E-type).

(iv) Some tables are not machines Particular \[\to \]Negative (O- type).

I + E \[\Rightarrow \] O-type of conclusions "Some books are not machines". E + A \[\Rightarrow {{O}_{1}}\]-type of Conclusion "Some tents are not tables". Conclusions I and III form Complementary Pair. Therefore, either I or II follows.