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  2. International English Language Testing System - Wikipedia

    en.wikipedia.org/wiki/International_English...

    International English Language Testing System (IELTS / ˈ aɪ. ɛ l t s /) [6] is an international standardized test of English language proficiency for non-native English language speakers. It is jointly managed by the British Council, IDP and Cambridge English, [6] and was established in 1989. IELTS is one of the major English-language tests ...

  3. Problem solving - Wikipedia

    en.wikipedia.org/wiki/Problem_solving

    Problem solving is the process of achieving a goal by overcoming obstacles, a frequent part of most activities. Problems in need of solutions range from simple personal tasks (e.g. how to turn on an appliance) to complex issues in business and technical fields.

  4. Creative problem-solving - Wikipedia

    en.wikipedia.org/wiki/Creative_problem-solving

    Creative problem-solving (CPS) [1] is the mental process of searching for an original and previously unknown solution to a problem. To qualify, the solution must be novel and reached independently. [1] [2] The creative problem-solving process was originally developed by Alex Osborn and Sid Parnes. Creative problem solving (CPS) is a way of ...

  5. Issue tree - Wikipedia

    en.wikipedia.org/wiki/Issue_tree

    According to professor of strategy Arnaud Chevallier, elaborating an approach used at McKinsey & Company, [3] there are two types of issue trees: diagnostic ones and solution ones. [4] Diagnostic trees break down a "why" key question, identifying all the possible root causes for the problem.

  6. Test of English as a Foreign Language - Wikipedia

    en.wikipedia.org/wiki/Test_of_English_as_a...

    The test-taker then writes a summary of the important points in the listening passage and explains how these relate to the key points of the reading passage. In the independent task, the test-taker must write an essay that states their opinion or choice, and then explain it, rather than simply listing personal preferences or choices.

  7. Inventor's paradox - Wikipedia

    en.wikipedia.org/wiki/Inventor's_paradox

    The inventor's paradox is a phenomenon that occurs in seeking a solution to a given problem. Instead of solving a specific type of problem, which would seem intuitively easier, it can be easier to solve a more general problem, which covers the specifics of the sought-after solution.

  8. List of unsolved problems in computer science - Wikipedia

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

    The problem to determine all positive integers such that the concatenation of and in base uses at most distinct characters for and fixed [citation needed] and many other problems in the coding theory are also the unsolved problems in mathematics.

  9. List of unsolved problems in chemistry - Wikipedia

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

    RNA folding problem: Is it possible to accurately predict the secondary, tertiary and quaternary structure of a polyribonucleic acid sequence based on its sequence and environment? Protein design : Is it possible to design highly active enzymes de novo for any desired reaction?