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These problems may or may not have an actual solution. Some of them are flat out contradictions, some lead you into infinite loops of logic.

Latest: SupraRef Indexing Rating: 5.00

A very large book SupraRef refers to its index every book that does NOT refer to itself in the index.

Does SupraRef refer to itself in the index? Provide valid reasoning for your answer.

Submitted on 2023-03-10 by K Sengupta

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