Question

In each question below are given three statements followed by three conclusions numbered I, II and III. You have to take the three 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. 

Statements:       All plots are lands.

                                All lands are houses.

                                All houses are flats.

Conclusions:       I. Some lands are plots.

                                II. All houses may be plots.

                                III. Some flats are not lands.

A All follow Correct Answer Incorrect Answer
B Only I follows Correct Answer Incorrect Answer
C Only III follows Correct Answer Incorrect Answer
D Only I and II follow Correct Answer Incorrect Answer
E None of these Correct Answer Incorrect Answer

Solution

All plots are lands.(A) ⇒ conversion ⇒ Some lands are plots.(I) Hence, conclusion I will follow. All plots are lands (A) + All lands are houses (A) = All plots are houses (A) ⇒ Possible conclusion ⇒  All houses may be plots. (A). Hence, conclusion II will follow. All lands are houses (A) + All houses are flats (A) = All lands are flats (A) ⇒ conversion ⇒ Some flats are lands.(I). Hence, conclusion III will not follow.

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