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  2. Google Answers - Wikipedia

    en.wikipedia.org/wiki/Google_Answers

    Google Answers' predecessor was Google Questions and Answers, which was launched in June 2001. This service involved Google staffers answering questions by e-mail for a flat fee (US$3.00). It was fully functional for about 24 hours, after which it was shut down, possibly due to excessive demand and the tough competition that Yahoo! set in place ...

  3. Category : Educational and instructional television channels

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

    Help; Learn to edit; Community portal; Recent changes; Upload file; Special pages

  4. nth root - Wikipedia

    en.wikipedia.org/wiki/Nth_root

    The four 4th roots of −1, none of which are real The three 3rd roots of −1, one of which is a negative real. An n th root of a number x, where n is a positive integer, is any of the n real or complex numbers r whose nth power is x:

  5. Free ad-supported streaming television - Wikipedia

    en.wikipedia.org/wiki/Free_ad-supported...

    The FAST ecosystem has several layers. The best-known FASTs are the aggregators, which fall into three categories. FASTs owned by major media companies: Paramount's Pluto TV, Fox's Tubi, Charter Communications and Comcast's Xumo Play, Dish Network's Sling Freestream, ITV’s ITVX service, NEW ID's BINGE Korea, [3] Allen Media Group's Local Now, and Gray Television and National Association of ...

  6. Additional Mathematics - Wikipedia

    en.wikipedia.org/wiki/Additional_Mathematics

    Section B contains 4 questions where students are given the choice to answer 3 out of 4 of them. Section C contains 4 questions where students are only required to answer 2 out of 4 of the given questions. All Section C questions are based on the same chapters every year and are thus predictable.

  7. List of United States over-the-air television networks

    en.wikipedia.org/wiki/List_of_United_States_over...

    Through the use of multicasting, there have also been a number of new Spanish-language and non-commercial public TV networks that have launched. Free-to-air networks in the U.S. can be divided into five categories: Commercial networks – which air English-language programming to a general audience (for example, ABC, CBS, NBC, and Fox);

  8. List of quiz channels - Wikipedia

    en.wikipedia.org/wiki/List_of_quiz_channels

    In Flanders the main TV channels already banned the games between 2008 and 2010, except vtm and 2BE who stopped in 2011. In Wallonia the games are still broadcast. The Belgian cabaret Neveneffecten had a TV-show Basta in January 2011 on channel Eén .

  9. Raising and lowering indices - Wikipedia

    en.wikipedia.org/wiki/Raising_and_lowering_indices

    It is common convention to use greek indices when writing expressions involving tensors in Minkowski space, while Latin indices are reserved for Euclidean space. Well-formulated expressions are constrained by the rules of Einstein summation: any index may appear at most twice and furthermore a raised index must contract with a lowered index ...