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In each of th...

Question

In each of the questions below are given three statements followed by two conclusions numbered I and II. You have to take the given statements to be true even if they seem to be a 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 fishes are birds.
All birds are rats.
All rats are cows.

Conclusions
I. All birds are cows.
II. All rats are fishes.

A

Only conclusion I follows

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B

Only conclusion II follows

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C

Either conclusion I or II follows

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D

Neither conclusion I nor II follows

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E

Both conclusions I and II follow

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Solution

The correct option is A Only conclusion I follows
All fishes are birds.
All birds are rats.
$A + A \Rightarrow A$ -type of conclusion
All fishes are rats.
All birds are rats.
All rats are cows.
$A + A \Rightarrow A$ -type of conclusion
All birds are cows.
This is conclusion I.

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