Question
Statements: No Gold is a Silver. All
Diamond are Silver. All Diamond are Bronze. Conclusions: I. At least some Bronze are not Gold. II. No Diamond is a Gold. III. No Gold is Bronze. In each of the questions below are given some statements followed by some Conclusions. 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.Solution
Alternative Method: All Diamond are Silver (A) → Conversion → Some Silver are Diamond (I) + All Diamond are Bronze (A) → Some Silver are Bronze (I). No Gold is a Silver (E) + Some Silver are Bronze (I) → Some Bronze are not Gold (O*). Hence conclusion I follows but conclusion III does not follow. All Diamond are Silver (A) + [No Gold is a Silver (E) → Conversion] → No Silver is a Gold (E) → No Diamond is a Gold (E). Hence conclusion II follows.
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