Question
Two statements are given, followed by three conclusions
numbered I. II and III. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements. Statements: Some officials are announcements. No announcement is letter. Conclusions: I. No official is a letter. II. Some announcements are officials. III. No letter is a official.Solution
Some officials are announcements (I) + No announcement is letter (E) β Some officials are not letters (O). Hence neither conclusion I nor III follow. Some officials are announcements (I) β Conversion β Some announcements are officials (I). Hence conclusion II follows.
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