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  2. Category:Lists of unsolved problems - Wikipedia

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

    This page was last edited on 24 February 2020, at 19:58 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.

  3. We’re Obsessed With These 50 Strange Items That Solve Real ...

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    These aren't your standard household items; they're conversation starters disguised as solutions, turning mundane tasks into moments of unexpected joy. Picture We’re Obsessed With These 50 ...

  4. List of impossible puzzles - Wikipedia

    en.wikipedia.org/wiki/List_of_impossible_puzzles

    Three utilities problem – Connect three cottages to gas, water, and electricity without crossing lines. [ 9 ] Thirty-six officers problem – Arrange six regiments consisting of six officers each of different ranks in a 6 × 6 square so that no rank or regiment is repeated in any row or column.

  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 ...

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    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 unsolved problems in physics - Wikipedia

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

    The following is a list of notable unsolved problems grouped into broad areas of physics. [1]Some of the major unsolved problems in physics are theoretical, meaning that existing theories seem incapable of explaining a certain observed phenomenon or experimental result.