Question
Three statements are given, followed by two conclusions
numbered I and II. Assuming the statements to be true, even if they seem to be at a variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements. Statements: All Parrot is Hen. Some Parrot is Swan. No Parrot is Peacock. Conclusions: I. Some Swan is Hen. II. Some Hen is not Peacock.Solution
Some Parrot is Swan (A) β Conversion β Some Swan is Parrot (I) + All Parrot is Hen (A β Some Swan is Hen (I). Hence conclusion I follows. No Parrot is Peacock (E) β Conversion β No Peacock is Parrot (E) + All Parrot is Hen (A) β Some Hen is not Peacock (O*). Hence conclusion II follows.
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