Some statements are given, followed by some conclusions. Consider the statements to be true even if they seem to be at variance from commonly known facts. Decide which of the given conclusions follow from the given statements.
Statements:
Some books are files.
All files are discs.
Some discs are boards.
All boards are keys.
Conclusions:
I. Some books are keys.
II. No book is a key.
III. Some discs are keys.

Only I follows

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Only II follows

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Both II and III follow

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Only I and III follow

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Either I or II and III follows

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Solution

The correct option is E Either I or II and III follows
Either I or II and III follow

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Similar questions

Q. Some statements are given, followed by some conclusions. Consider the statements to be true even if they seem to be at variance from commonly known facts. Decide which of the given conclusions follow from the given statements.

Statements : Some books are trees.
All trees are roads.
All roads are wheels.
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Some statements are given, followed by some conclusions. Consider the statements to be true even if they seem to be at variance from commonly known facts. Decide which of the given conclusions follow from the given statements.

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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 tables are boards.
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The correct option is E Either I or II and III followsEither I or II and III follow

The correct option is E Either I or II and III follows
Either I or II and III follow