Question
In each question below are given three 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 with 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. Statement: All books are notebooks. No notebook is a magazine. All magazines are pencils. Conclusions: I. No magazine is a notebook. II. All pencils are magazines. III. Some notebooks are books.Solution
No notebook is a magazine (E) ⇒ Conversion ⇒ No magazine is a notebook (E). Hence conclusion I follows. All magazines are pencils (A) ⇒ conversion ⇒ Some pencils are magazines (A). Hence conclusion II does not follow. All books are notebooks ⇒ Conversion ⇒ Some notebooks are books (I). Hence conclusion III follows.
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