In each of the questions below are given four statements followed by four conclusions numbered I, II, III and IV. 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
All books are diaries.
Some diaries are pens.
Some pens are drawers.
All drawers are chairs.

Conclusions
I. Some drawers are diaries.
II. Some chairs are pens.
III. Some pens are books.
IV. Some diaries are books.

None follows

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Only II follows

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Both II and III follow

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Both II and IV follow

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All follow

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Solution

The correct option is D Both II and IV follow
Mediate term of the following statement is
Some pens are drawers (I-type)
All drawers are chairs (A-type)
$I + A \to I t y p e$
Some pens are chairs
Conversion some chairs are pens
(Conclusion II follows)
All books are diaries
Conversion Some diaries are books
(Conclusion IV follows)

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Q. In each of the questions below, four statements are given followed by four conclusions numbered I, II, III and IV. 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.

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All books are diaries.
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