Question
Statement : No bag is a file. All files are
folders. Some folders are notes. No note is a letter. Conclusion: I. Some letters are folders. II. Some files are notes. III. No folder is a bag. IV. Some letters are not folders. In each of the questions below are given four statements followed by four conclusions numbered I, II and III and IV. You have to take the given statements to be true even if they seem to be at variance with commonly known facts. Read all the conclusions and then decide which of given conclusions logically follows from the given statements disregarding commonly known facts.Solution
Some folders are notes (I) + No note is a letter (E) ⇒ some folders are not letters (O). Hence, conclusion I and IV will not follow but it will make a complementary pair. All files are folders (A) + Some folders are notes (I) ⇒ No conclusion. Hence, conclusion II will not follow. No bag is a file (E). ⇒ All files are folders (A) ⇒ Some folders are not bags (O. Hence, Conclusion III not follow. ALTERNATE SOLUTION: Relevant Minimal Possibility: 
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