Question
Statements: All Telegram are Office. Some Letter are Office. Some Mail are Letter. No Letter is Posts. Conclusions:
I. Some Mail are not Posts.
II. Some Telegram are Mail.
III. No Office can be Mail.
In the question below there are four statements followed by three conclusions I, II andIII. You have to take the given statements to be true even if they seem to be at variance from commonly known facts and then decide which of the given conclusions logically follows from the three statements disregarding commonly known facts.
Solution
Some Mail are Letter (I) + No Letter is Posts (E) → Some Mail are not Posts (O). Hence conclusion I follows. All Telegram are Office (A) + Some Letter are Office (I) → No conclusion. Hence conclusion II does not follow. Some Mail are Letter (I) + Some Letter are Office (I) → Probable conclusion → No Office can be Mail (E). Hence conclusion III follows.
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