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  2. Category:Lists of unsolved problems - Wikipedia

    en.wikipedia.org/wiki/Category:Lists_of_unsolved...

    Printable version; In other projects Wikidata item; Appearance. ... Pages in category "Lists of unsolved problems" The following 16 pages are in this category, out of ...

  3. 120 Fascinating Unanswerable Questions That Will Astound You

    www.aol.com/120-fascinating-unanswerable...

    Unanswerable questions may not have solutions, but they sure give our minds one heck of a workout. That's what makes them equally fun and frustrating to ponder. Trying to come up with joke answers ...

  4. Lists of problems - Wikipedia

    en.wikipedia.org/wiki/Lists_of_problems

    Print/export Download as PDF; Printable version; In other projects Wikidata item; ... The following articles contain lists of problems: List of philosophical problems;

  5. List of unsolved problems in chemistry - Wikipedia

    en.wikipedia.org/wiki/List_of_unsolved_problems...

    Protein folding problem: Is it possible to predict the secondary, tertiary and quaternary structure of a polypeptide sequence based solely on the sequence and environmental information? Inverse protein-folding problem: Is it possible to design a polypeptide sequence which will adopt a given structure under certain environmental conditions?

  6. 50 Incredibly Clever Ways People Solved Problems Most ...

    www.aol.com/lifestyle/100-incredibly-clever-ways...

    They go above and beyond to make everyday products more convenient and inclusive. He 50 Incredibly Clever Ways People Solved Problems Most Overlooked (New Pics)

  7. List of impossible puzzles - Wikipedia

    en.wikipedia.org/wiki/List_of_impossible_puzzles

    [1] Five room puzzle – Cross each wall of a diagram exactly once with a continuous line. [2] MU puzzle – Transform the string MI to MU according to a set of rules. [3] Mutilated chessboard problem – Place 31 dominoes of size 2×1 on a chessboard with two opposite corners removed. [4] Coloring the edges of the Petersen graph with three ...