Question
Statements: Every Subject are Tough Some
Subject are Easy Some Subject are Doubt Conclusions: I. A few Doubt are Tough II. A few Easy are Doubt III. A few Easy are Tough In the question below there are three statements followed by three conclusions I, II and III. You have to take the three 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 Subject are Doubt (I) → Conversion → Some Doubt are Subject (I) + All Subject are Tough (A) →  Some Doubt are Tough (I). Hence conclusion I follows. Some Subject are Doubt (I) → Conversion → Some Doubt are Subject (I) + Some Subject are Easy (I) → No conclusion. Hence conclusion II does not follow. Some Subject are Easy (I) → Conversion → Some Easy are Subject (I) + All Subject are Tough (A) →  Some Easy are Tough (I). Hence conclusion III follows.
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