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Question

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

Statement : Some minerals are ores.

Some ores are woods.

All woods are acids.

No acids is a metal.

Conclusion : I. Some acids are minerals.

II. Some metals are not woods.

III. Some metals are ores.

IV. Some acids may not be woods.

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

Solution

I + I =No conclusion. Hence, conclusion I will not follow. All woods are acids (A) + No acid is a metal (E) ⇒ No wood is a metal (E) ⇒ Conversion ⇒ Some metals are not woods (O) . Hence, conclusion II follows. Some ores are woods (I) + All woods are acids (A) ⇒ Some ores are acid (I) + No acid is a metal (E) ⇒ Some ores are not metals (O).Hence, conclusion III will not follow. All woods are acids (A) ⇒ Conversion ⇒ Some acids are woods (I) ⇒ Probable conclusion ⇒ Some acids may not be woods (O). Hence, conclusion IV follow. ALTERNATE SOLUTION: Relevant Minimal Possibility:

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