Question
Statements: No book is a pen. All copies are
books. All books are telephones. No radio is a telephone. Conclusions: I. Some pens are not copies. II. All copies are telephones. In each of the questions below are given four statements followed by two conclusions numbered I and II . You have to take the given statements to be true even if they seem to be at variance with commonly known facts. Read all the conclusions and then decide which of given conclusions logically follows from the given statements disregarding commonly known facts.Solution
All copies are books (A) + No book is a pen (E) = No copy is a pen ⇒ Conversion ⇒ No pen is as copy (E) ⇒ I.I ⇒ Some pens are not copies(O).Hence, Conclusion I will follow. All copies are books(A) + All books are telephones(A) = All copies are telephones(A). Hence, conclusion II follow.
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