Question
Read the given statements and conclusion carefully.
Assuming the information given in the statement is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) form the statements. Statement: Some Ripe are Unripe. All Unripe are Sweet. No Sweet is Sour. All Pour are Sour. Conclusions: I. No Unripe is Pour. II. Some Sweet are not Pour. III. Some Ripe are not Sour.Solution
All Unripe are Sweet (A) + No Sweet is Sour (E) → No Unripe is a Sour (E) + Some Sour are Pour (I) → Some Pour are not Unripe (O). Hence conclusion I does not follow. All Pour are Sour (A) + No Sour is Sweet (E) → No Pour is a Sweet (E) → Conversion → Some Sweet are not Pour (O). Hence conclusion II follows. Some Ripe are Unripe (I) + All Unripe are Sweet (A) → Some Ripe are Sweet (I) + No Sweet is Sour (E) → Some Ripe are not Sour (O). Hence conclusion III follows.
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