In each of the questions below are given four statements followed by four conclusions numbered I, II, Ill 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 silver are metals.
All metals are steel.
Some steel are stones.
All stones are stands.

Conclusions
I. Some stands are metals.
II. Some stones are silver.
III. Some stands are steel.
IV. Some stones are steel.

Only III and IV follow

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Only I follows

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Only II follows

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Only III follows

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None of these

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Solution

The correct option is A Only III and IV follow
All silver are metals.
All metals are steel.
$A + A \Rightarrow A$ -type of conclusion
All silver are steel.
Some steel are stones.
All stones are stands.
$I + A \Rightarrow I$ -type of conclusion
Some steel are stands.
Conclusion III is the converse of it.
Conclusion IV is converse of the third premise.

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Some stones are rocks.
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All stones are hammers.
No hammer is a ring.
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Q. In each of the following questions, two statements are given followed by four conclusions I, II, III and IV. You have to consider the statements to be true even if they seem to be at variance from commonly known facts. You have to decide which of the given conclusions if any, follow from the given statements.

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All metals are silver.
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